315391880 has 32 divisors (see below), whose sum is σ = 712598040. Its totient is φ = 125629440.

The previous prime is 315391877. The next prime is 315391883. The reversal of 315391880 is 88193513.

It is an interprime number because it is at equal distance from previous prime (315391877) and next prime (315391883).

It can be written as a sum of positive squares in 4 ways, for example, as 313219204 + 2172676 = 17698^2 + 1474^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (315391883) 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, 6719 + ... + 25998.

Almost surely, 2^315391880 is an apocalyptic number.

It is an amenable number.

315391880 is an abundant number, since it is smaller than the sum of its proper divisors (397206160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315391880 is a wasteful number, since it uses less digits than its factorization.

315391880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32969 (or 32965 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 315391880 is about 17759.2758861391. The cubic root of 315391880 is about 680.6912520888.

The spelling of 315391880 in words is "three hundred fifteen million, three hundred ninety-one thousand, eight hundred eighty".