315306657 has 12 divisors (see below), whose sum is σ = 456124500. Its totient is φ = 209889888.

The previous prime is 315306643. The next prime is 315306661. The reversal of 315306657 is 756603513.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 282542481 + 32764176 = 16809^2 + 5724^2 .

It is not a de Polignac number, because 315306657 - 2⁷ = 315306529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (315306697) 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 11 ways as a sum of consecutive naturals, for example, 19782 + ... + 31967.

It is an arithmetic number, because the mean of its divisors is an integer number (38010375).

Almost surely, 2^315306657 is an apocalyptic number.

It is an amenable number.

315306657 is a deficient number, since it is larger than the sum of its proper divisors (140817843).

315306657 is a wasteful number, since it uses less digits than its factorization.

315306657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52432 (or 52429 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 36.

The square root of 315306657 is about 17756.8763300306. The cubic root of 315306657 is about 680.6299360139.

The spelling of 315306657 in words is "three hundred fifteen million, three hundred six thousand, six hundred fifty-seven".