315640312 has 32 divisors (see below), whose sum is σ = 670899600. Its totient is φ = 138011904.

The previous prime is 315640279. The next prime is 315640363. The reversal of 315640312 is 213046513.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 77893 + ... + 81844.

Almost surely, 2^315640312 is an apocalyptic number.

It is an amenable number.

315640312 is an abundant number, since it is smaller than the sum of its proper divisors (355259288).

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

315640312 is a wasteful number, since it uses less digits than its factorization.

315640312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159775 (or 159771 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 315640312 is about 17766.2689386376. The cubic root of 315640312 is about 680.8699304444.

Adding to 315640312 its reverse (213046513), we get a palindrome (528686825).

The spelling of 315640312 in words is "three hundred fifteen million, six hundred forty thousand, three hundred twelve".