315212520 has 64 divisors (see below), whose sum is σ = 1080731520. Its totient is φ = 72048384.

The previous prime is 315212519. The next prime is 315212537. The reversal of 315212520 is 25212513.

315212520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 15 ways as a sum of consecutive naturals, for example, 186787 + ... + 188466.

It is an arithmetic number, because the mean of its divisors is an integer number (16886430).

Almost surely, 2^315212520 is an apocalyptic number.

315212520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

315212520 is an abundant number, since it is smaller than the sum of its proper divisors (765519000).

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

315212520 is a wasteful number, since it uses less digits than its factorization.

315212520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375274 (or 375270 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 315212520 is about 17754.2254125602. The cubic root of 315212520 is about 680.5621936681.

The spelling of 315212520 in words is "three hundred fifteen million, two hundred twelve thousand, five hundred twenty".