The number 31027
31027 is a composite number with 8 divisors. Its prime factorisation is 19 × 23 × 71. Divisors (8): 1, 19, 23, 71, 437, 1349, 1633, 31027.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
31027 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
31027 is composite. Its prime factorisation is
- 3
The divisors add up to 34560; without 31027 itself that is 3533, so 31027 is deficient (3533 is less than 31027). Euler's totient φ(31027) = 27720 numbers up to 31027 share no factor with it.
- 4
The digits of 31027 add up to 13, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 147 steps to reach 1.
LaTeX source of the formulas on this page
\[ 31027 = 19 \times 23 \times 71 \]
31027 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 34560 |
| Euler totient φ(n) | 27720 |
| Square | 962674729 |
| Cube | 29868908816683 |
| Square root | 176.144827 |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 147 |
| Scientific notation | 3.1027 × |
31027 in other forms
| Form | Value |
|---|---|
| In words | thirty-one thousand and twenty-seven |
| Binary (base 2) | 111100100110011 |
| Octal (base 8) | 74463 |
| Hexadecimal (base 16) | 7933 |
| Base 3 | 1120120011 |
| As time | 31027 seconds = 8 h 37 min 7 s |
Is 31027 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 2) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 31027 a prime number?
No. 31027 = 19 × 23 × 71, so it is divisible by 19.
What are the factors of 31027?
1, 19, 23, 71, 437, 1349, 1633, 31027.
What is 31027 in binary?
111100100110011 (hexadecimal 7933, octal 74463).
What is the square root of 31027?
About 176.1448.
Is 31027 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 31027?
It is a composite number with 8 divisors.