315591138 has 12 divisors (see below), whose sum is σ = 683780838. Its totient is φ = 105197040.

The previous prime is 315591131. The next prime is 315591139. The reversal of 315591138 is 831195513.

315591138 is a `hidden beast` number, since 31 + 5 + 591 + 1 + 38 = 666.

It can be written as a sum of positive squares in only one way, i.e., 281333529 + 34257609 = 16773^2 + 5853^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (315591131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8766403 + ... + 8766438.

Almost surely, 2^315591138 is an apocalyptic number.

315591138 is an abundant number, since it is smaller than the sum of its proper divisors (368189700).

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

315591138 is a wasteful number, since it uses less digits than its factorization.

315591138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17532849 (or 17532846 counting only the distinct ones).

The product of its digits is 16200, while the sum is 36.

The square root of 315591138 is about 17764.8849700751. The cubic root of 315591138 is about 680.8345707481.

The spelling of 315591138 in words is "three hundred fifteen million, five hundred ninety-one thousand, one hundred thirty-eight".