315421875 has 42 divisors (see below), whose sum is σ = 569758332. Its totient is φ = 168150000.

The previous prime is 315421861. The next prime is 315421879. The reversal of 315421875 is 578124513.

315421875 is a `hidden beast` number, since 31 + 542 + 1 + 87 + 5 = 666.

It is not a de Polignac number, because 315421875 - 2⁹ = 315421363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (315421879) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 139504 + ... + 141746.

Almost surely, 2^315421875 is an apocalyptic number.

315421875 is a deficient number, since it is larger than the sum of its proper divisors (254336457).

315421875 is an frugal number, since it uses more digits than its factorization.

315421875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279 (or 2251 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 315421875 is about 17760.1203543219. The cubic root of 315421875 is about 680.7128302039.

The spelling of 315421875 in words is "three hundred fifteen million, four hundred twenty-one thousand, eight hundred seventy-five".