315321530 has 16 divisors (see below), whose sum is σ = 597451680. Its totient is φ = 119490192.

The previous prime is 315321493. The next prime is 315321533. The reversal of 315321530 is 35123513.

It is a junction number, because it is equal to n+sod(n) for n = 315321496 and 315321505.

It is not an unprimeable number, because it can be changed into a prime (315321533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 829604 + ... + 829983.

It is an arithmetic number, because the mean of its divisors is an integer number (37340730).

Almost surely, 2^315321530 is an apocalyptic number.

315321530 is a deficient number, since it is larger than the sum of its proper divisors (282130150).

315321530 is a wasteful number, since it uses less digits than its factorization.

315321530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659613.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 315321530 is about 17757.2951205976. The cubic root of 315321530 is about 680.6406376062.

The spelling of 315321530 in words is "three hundred fifteen million, three hundred twenty-one thousand, five hundred thirty".