315857312 has 12 divisors (see below), whose sum is σ = 621844146. Its totient is φ = 157928640.

The previous prime is 315857303. The next prime is 315857323. The reversal of 315857312 is 213758513.

It can be written as a sum of positive squares in only one way, i.e., 280763536 + 35093776 = 16756^2 + 5924^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4935239 + ... + 4935302.

Almost surely, 2^315857312 is an apocalyptic number.

315857312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

315857312 is a deficient number, since it is larger than the sum of its proper divisors (305986834).

315857312 is an equidigital number, since it uses as much as digits as its factorization.

315857312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9870551 (or 9870543 counting only the distinct ones).

The product of its digits is 25200, while the sum is 35.

The square root of 315857312 is about 17772.3749679102. The cubic root of 315857312 is about 681.0259254421.

The spelling of 315857312 in words is "three hundred fifteen million, eight hundred fifty-seven thousand, three hundred twelve".