315907691 has 18 divisors (see below), whose sum is σ = 361814628. Its totient is φ = 273523360.

The previous prime is 315907621. The next prime is 315907717. The reversal of 315907691 is 196709513.

It is not a de Polignac number, because 315907691 - 2¹⁴ = 315891307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315907621) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1355711 + ... + 1355943.

Almost surely, 2^315907691 is an apocalyptic number.

315907691 is a deficient number, since it is larger than the sum of its proper divisors (45906937).

315907691 is an equidigital number, since it uses as much as digits as its factorization.

315907691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 51030, while the sum is 41.

The square root of 315907691 is about 17773.7922515146. The cubic root of 315907691 is about 681.0621312222.

The spelling of 315907691 in words is "three hundred fifteen million, nine hundred seven thousand, six hundred ninety-one".