315132520 has 16 divisors (see below), whose sum is σ = 709048260. Its totient is φ = 126052992.

The previous prime is 315132497. The next prime is 315132539. The reversal of 315132520 is 25231513.

It can be written as a sum of positive squares in 2 ways, for example, as 312370276 + 2762244 = 17674^2 + 1662^2 .

It is a junction number, because it is equal to n+sod(n) for n = 315132491 and 315132500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3939117 + ... + 3939196.

Almost surely, 2^315132520 is an apocalyptic number.

It is an amenable number.

315132520 is an abundant number, since it is smaller than the sum of its proper divisors (393915740).

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

315132520 is a wasteful number, since it uses less digits than its factorization.

315132520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7878324 (or 7878320 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 315132520 is about 17751.9722847913. The cubic root of 315132520 is about 680.5046139098.

The spelling of 315132520 in words is "three hundred fifteen million, one hundred thirty-two thousand, five hundred twenty".