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 |
Reading 315 in NumGrid context
The 315 record above pulls directly from classical number theory plus NumGrid solver-derived puzzle statistics. What follows is the per-entity context — how 315 sits in the broader integer properties and number-guessing puzzles distribution and which underlying factors drive the headline numbers.
Every number on this page links back to classical number theory plus NumGrid solver-derived puzzle statistics; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for 315 is typically a peer within positive integers within the NumGrid target pool with similar size, similar exposure, or similar geography — not the national-level summary alone.
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.