The number 31270
31270 is a composite number with 16 divisors. Its prime factorisation is 2 × 5 × 53 × 59. Divisors (16): 1, 2, 5, 10, 53, 59, 106, 118, 265, 295, 530, 590, 3127, 6254, 15635, 31270.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
31270 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
31270 is composite. Its prime factorisation is
- 3
The divisors add up to 58320; without 31270 itself that is 27050, so 31270 is deficient (27050 is less than 31270). Euler's totient φ(31270) = 12064 numbers up to 31270 share no factor with it.
- 4
The digits of 31270 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 134 steps to reach 1.
LaTeX source of the formulas on this page
\[ 31270 = 2 \times 5 \times 53 \times 59 \]
31270 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 58320 |
| Euler totient φ(n) | 12064 |
| Square | 977812900 |
| Cube | 30576209383000 |
| Square root | 176.833255 |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 134 |
| Scientific notation | 3.127 × |
31270 in other forms
| Form | Value |
|---|---|
| In words | thirty-one thousand two hundred and seventy |
| Binary (base 2) | 111101000100110 |
| Octal (base 8) | 75046 |
| Hexadecimal (base 16) | 7A26 |
| Base 3 | 1120220011 |
| As time | 31270 seconds = 8 h 41 min 10 s |
Is 31270 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (31270 ÷ 2 = 15635) | 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 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (31270 ÷ 5 = 6254) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 4) | 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 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (31270 ÷ 10 = 3127) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 8) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 31270 a prime number?
No. 31270 = 2 × 5 × 53 × 59, so it is divisible by 2.
What are the factors of 31270?
1, 2, 5, 10, 53, 59, 106, 118, 265, 295, 530, 590, 3127, 6254, 15635, 31270.
What is 31270 in binary?
111101000100110 (hexadecimal 7A26, octal 75046).
What is the square root of 31270?
About 176.8333.
Is 31270 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 31270?
It is a composite number with 16 divisors.