odd, composite · 315th positive integer
The number 315
315 is an odd composite number. It is the 315th positive integer.
Quick reference
| Prime factorization | 3 × 3 × 5 × 7 |
| Divisors | 1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315 |
| Binary | 100111011 |
| Hexadecimal | 0x13B |
| Roman numeral | CCCXV |
| Digit sum | 9 |
| Properties | odd, composite |
Frequently asked
Is 315 a prime number?
No. 315 is composite. Its prime factorization is 3 × 3 × 5 × 7.
What are the factors of 315?
The factors (divisors) of 315 are 1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315.
What is 315 in binary?
315 in binary is 100111011. In hexadecimal it's 13B.
What is 315 as a Roman numeral?
315 in Roman numerals is CCCXV.
What's the digit sum of 315?
Adding the digits of 315: 3 + 1 + 5 = 9.