315680187 has 4 divisors (see below), whose sum is σ = 420906920. Its totient is φ = 210453456.

The previous prime is 315680179. The next prime is 315680201. The reversal of 315680187 is 781086513.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 315680187 - 2³ = 315680179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315680107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52613362 + ... + 52613367.

It is an arithmetic number, because the mean of its divisors is an integer number (105226730).

Almost surely, 2^315680187 is an apocalyptic number.

315680187 is a deficient number, since it is larger than the sum of its proper divisors (105226733).

315680187 is a wasteful number, since it uses less digits than its factorization.

315680187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105226732.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 315680187 is about 17767.3911140606. The cubic root of 315680187 is about 680.8986007845.

The spelling of 315680187 in words is "three hundred fifteen million, six hundred eighty thousand, one hundred eighty-seven".