The number 31494
31494 is a composite number with 16 divisors. Its prime factorisation is 2 × 3 × 29 × 181. Divisors (16): 1, 2, 3, 6, 29, 58, 87, 174, 181, 362, 543, 1086, 5249, 10498, 15747, 31494.
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How to work it out
- 1
31494 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
31494 is composite. Its prime factorisation is
- 3
The divisors add up to 65520; without 31494 itself that is 34026, so 31494 is abundant (34026 is more than 31494). Euler's totient φ(31494) = 10080 numbers up to 31494 share no factor with it.
- 4
The digits of 31494 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 147 steps to reach 1.
LaTeX source of the formulas on this page
\[ 31494 = 2 \times 3 \times 29 \times 181 \]
31494 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 65520 |
| Euler totient φ(n) | 10080 |
| Square | 991872036 |
| Cube | 31238017901784 |
| Square root | 177.465490 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 147 |
| Scientific notation | 3.1494 × |
31494 in other forms
| Form | Value |
|---|---|
| In words | thirty-one thousand four hundred and ninety-four |
| Binary (base 2) | 111101100000110 |
| Octal (base 8) | 75406 |
| Hexadecimal (base 16) | 7B06 |
| Base 3 | 1121012110 |
| As time | 31494 seconds = 8 h 44 min 54 s |
Is 31494 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (31494 ÷ 2 = 15747) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (31494 ÷ 3 = 10498) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 4) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (31494 ÷ 6 = 5249) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 1) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 4) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 1) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 31494 a prime number?
No. 31494 = 2 × 3 × 29 × 181, so it is divisible by 2.
What are the factors of 31494?
1, 2, 3, 6, 29, 58, 87, 174, 181, 362, 543, 1086, 5249, 10498, 15747, 31494.
What is 31494 in binary?
111101100000110 (hexadecimal 7B06, octal 75406).
What is the square root of 31494?
About 177.4655.
Is 31494 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 31494?
It is a composite number with 16 divisors.