The number 31046
31046 is a composite number with 12 divisors. Its prime factorisation is 2 × × 43. Divisors (12): 1, 2, 19, 38, 43, 86, 361, 722, 817, 1634, 15523, 31046.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
31046 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
31046 is composite. Its prime factorisation is
- 3
The divisors add up to 50292; without 31046 itself that is 19246, so 31046 is deficient (19246 is less than 31046). Euler's totient φ(31046) = 14364 numbers up to 31046 share no factor with it.
- 4
The digits of 31046 add up to 14, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 147 steps to reach 1.
LaTeX source of the formulas on this page
\[ 31046 = 2 \times 19^{2} \times 43 \]31046 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 50292 |
| Euler totient φ(n) | 14364 |
| Square | 963854116 |
| Cube | 29923814885336 |
| Square root | 176.198751 (= 19√86) |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 147 |
| Scientific notation | 3.1046 × |
31046 in other forms
| Form | Value |
|---|---|
| In words | thirty-one thousand and forty-six |
| Binary (base 2) | 111100101000110 |
| Octal (base 8) | 74506 |
| Hexadecimal (base 16) | 7946 |
| Base 3 | 1120120212 |
| As time | 31046 seconds = 8 h 37 min 26 s |
Is 31046 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (31046 ÷ 2 = 15523) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | 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 1) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 2) | 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 5) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 6) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 31046 a prime number?
No. 31046 = 2 × × 43, so it is divisible by 2.
What are the factors of 31046?
1, 2, 19, 38, 43, 86, 361, 722, 817, 1634, 15523, 31046.
What is 31046 in binary?
111100101000110 (hexadecimal 7946, octal 74506).
What is the square root of 31046?
About 176.1988, exactly 19√86.
Is 31046 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 31046?
It is a composite number with 12 divisors.