315840856 has 16 divisors (see below), whose sum is σ = 612622800. Its totient is φ = 152474784.

The previous prime is 315840821. The next prime is 315840871. The reversal of 315840856 is 658048513.

It is a congruent number.

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, 680460 + ... + 680923.

It is an arithmetic number, because the mean of its divisors is an integer number (38288925).

Almost surely, 2^315840856 is an apocalyptic number.

It is an amenable number.

315840856 is a deficient number, since it is larger than the sum of its proper divisors (296781944).

315840856 is a wasteful number, since it uses less digits than its factorization.

315840856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361418 (or 1361414 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 315840856 is about 17771.9119961809. The cubic root of 315840856 is about 681.0140982057.

The spelling of 315840856 in words is "three hundred fifteen million, eight hundred forty thousand, eight hundred fifty-six".