315240531 has 8 divisors (see below), whose sum is σ = 420403200. Its totient is φ = 210119112.

The previous prime is 315240529. The next prime is 315240539. The reversal of 315240531 is 135042513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 315240531 - 2¹ = 315240529 is a prime.

It is a super-2 number, since 2×315240531² = 198753184770323922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (315240539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21886 + ... + 33308.

It is an arithmetic number, because the mean of its divisors is an integer number (52550400).

Almost surely, 2^315240531 is an apocalyptic number.

315240531 is a deficient number, since it is larger than the sum of its proper divisors (105162669).

315240531 is a wasteful number, since it uses less digits than its factorization.

315240531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20625.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 315240531 is about 17755.0142495015. The cubic root of 315240531 is about 680.5823521979.

The spelling of 315240531 in words is "three hundred fifteen million, two hundred forty thousand, five hundred thirty-one".