MathQuarryCalculators

Primes / Is 315 prime?

Is 315 a Prime Number?

No315 = 3^2 x 5 x 7

315 is NOT prime: 3 × 105 = 315. That makes 3 a genuine divisor of 315 beyond 1 and 315 itself. Fully broken down, 315 = 3^2 × 5 × 7, for 12 divisors total. 315 sits between primes 313 and 317, 2 below and 2 above. 315: 3, 5, 7, 9 divide 315 evenly, checked against 2-12. 315 is odd, digit sum 9 for 315, digital root 9 for 315. 315 has 4 primes within 10 of 315.

Factors
1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315
Number of factors
12
Prime?
No
Prime factorization
3^2 x 5 x 7
Even or odd
Odd
Square
99225
Cube
31255875
Binary
100111011
Hexadecimal
13B
Roman numeral
CCCXV
Perfect square?
No
Perfect cube?
No
Perfect number?
No
Triangular number?
No
Fibonacci number?
No
Full facts for 315 →Factors of 315 →