315235216 has 20 divisors (see below), whose sum is σ = 646696332. Its totient is φ = 148345856.

The previous prime is 315235189. The next prime is 315235223. The reversal of 315235216 is 612532513.

It can be written as a sum of positive squares in 2 ways, for example, as 171714816 + 143520400 = 13104^2 + 11980^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579205 + ... + 579748.

Almost surely, 2^315235216 is an apocalyptic number.

It is an amenable number.

315235216 is an abundant number, since it is smaller than the sum of its proper divisors (331461116).

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

315235216 is a wasteful number, since it uses less digits than its factorization.

315235216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158978 (or 1158972 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 315235216 is about 17754.8645728431. The cubic root of 315235216 is about 680.5785272715.

Adding to 315235216 its reverse (612532513), we get a palindrome (927767729).

The spelling of 315235216 in words is "three hundred fifteen million, two hundred thirty-five thousand, two hundred sixteen".