315725388 has 24 divisors (see below), whose sum is σ = 803664960. Its totient is φ = 95674320.

The previous prime is 315725387. The next prime is 315725401. The reversal of 315725388 is 883527513.

It is not an unprimeable number, because it can be changed into a prime (315725381) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1195798 + ... + 1196061.

It is an arithmetic number, because the mean of its divisors is an integer number (33486040).

Almost surely, 2^315725388 is an apocalyptic number.

It is an amenable number.

315725388 is an abundant number, since it is smaller than the sum of its proper divisors (487939572).

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

315725388 is a wasteful number, since it uses less digits than its factorization.

315725388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391877 (or 2391875 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 315725388 is about 17768.6630898332. The cubic root of 315725388 is about 680.9310976280.

The spelling of 315725388 in words is "three hundred fifteen million, seven hundred twenty-five thousand, three hundred eighty-eight".