315660813 has 32 divisors (see below), whose sum is σ = 478988160. Its totient is φ = 183306240.

The previous prime is 315660803. The next prime is 315660847. The reversal of 315660813 is 318066513.

It is not a de Polignac number, because 315660813 - 2⁶ = 315660749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315660803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231253 + ... + 232613.

It is an arithmetic number, because the mean of its divisors is an integer number (14968380).

Almost surely, 2^315660813 is an apocalyptic number.

It is an amenable number.

315660813 is a deficient number, since it is larger than the sum of its proper divisors (163327347).

315660813 is a wasteful number, since it uses less digits than its factorization.

315660813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 315660813 is about 17766.8458934049. The cubic root of 315660813 is about 680.8846710756.

The spelling of 315660813 in words is "three hundred fifteen million, six hundred sixty thousand, eight hundred thirteen".