315715530 has 32 divisors (see below), whose sum is σ = 816004224. Its totient is φ = 77714496.

The previous prime is 315715493. The next prime is 315715553. The reversal of 315715530 is 35517513.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404374 + ... + 405153.

It is an arithmetic number, because the mean of its divisors is an integer number (25500132).

Almost surely, 2^315715530 is an apocalyptic number.

315715530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

315715530 is an abundant number, since it is smaller than the sum of its proper divisors (500288694).

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

315715530 is a wasteful number, since it uses less digits than its factorization.

315715530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809550.

The product of its (nonzero) digits is 7875, while the sum is 30.

The square root of 315715530 is about 17768.3856891953. The cubic root of 315715530 is about 680.9240105739.

The spelling of 315715530 in words is "three hundred fifteen million, seven hundred fifteen thousand, five hundred thirty".