315925647 has 16 divisors (see below), whose sum is σ = 438723072. Its totient is φ = 202033440.

The previous prime is 315925627. The next prime is 315925663. The reversal of 315925647 is 746529513.

It is not a de Polignac number, because 315925647 - 2⁶ = 315925583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 315925599 and 315925608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315925627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12163 + ... + 27924.

It is an arithmetic number, because the mean of its divisors is an integer number (27420192).

Almost surely, 2^315925647 is an apocalyptic number.

315925647 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

315925647 is a deficient number, since it is larger than the sum of its proper divisors (122797425).

315925647 is a wasteful number, since it uses less digits than its factorization.

315925647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40198.

The product of its digits is 226800, while the sum is 42.

The square root of 315925647 is about 17774.2973700791. The cubic root of 315925647 is about 681.0750346961.

The spelling of 315925647 in words is "three hundred fifteen million, nine hundred twenty-five thousand, six hundred forty-seven".