315631065 has 16 divisors (see below), whose sum is σ = 505515456. Its totient is φ = 168168000.

The previous prime is 315631039. The next prime is 315631087. The reversal of 315631065 is 560136513.

It is not a de Polignac number, because 315631065 - 2⁵ = 315631033 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5755 + ... + 25775.

It is an arithmetic number, because the mean of its divisors is an integer number (31594716).

Almost surely, 2^315631065 is an apocalyptic number.

It is an amenable number.

315631065 is a deficient number, since it is larger than the sum of its proper divisors (189884391).

315631065 is a wasteful number, since it uses less digits than its factorization.

315631065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21080.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 315631065 is about 17766.0086963842. The cubic root of 315631065 is about 680.8632814567.

Adding to 315631065 its reverse (560136513), we get a palindrome (875767578).

The spelling of 315631065 in words is "three hundred fifteen million, six hundred thirty-one thousand, sixty-five".