315521164 has 12 divisors (see below), whose sum is σ = 631042384. Its totient is φ = 135223344.

The previous prime is 315521161. The next prime is 315521183. The reversal of 315521164 is 461125513.

315521164 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 11268613 = 315521164 / (3 + 1 + 5 + 5 + 2 + 1 + 1 + 6 + 4).

It is not an unprimeable number, because it can be changed into a prime (315521161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5634279 + ... + 5634334.

Almost surely, 2^315521164 is an apocalyptic number.

It is an amenable number.

315521164 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

315521164 is a wasteful number, since it uses less digits than its factorization.

315521164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11268624 (or 11268622 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 315521164 is about 17762.9154138615. The cubic root of 315521164 is about 680.7842480003.

Adding to 315521164 its reverse (461125513), we get a palindrome (776646677).

The spelling of 315521164 in words is "three hundred fifteen million, five hundred twenty-one thousand, one hundred sixty-four".