315212565 has 24 divisors (see below), whose sum is σ = 532290528. Its totient is φ = 159262560.

The previous prime is 315212561. The next prime is 315212581. The reversal of 315212565 is 565212513.

It is a happy number.

It is not a de Polignac number, because 315212565 - 2² = 315212561 is a prime.

It is a super-2 number, since 2×315212565² = 198717922267758450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315212561) 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 23 ways as a sum of consecutive naturals, for example, 23691 + ... + 34520.

It is an arithmetic number, because the mean of its divisors is an integer number (22178772).

Almost surely, 2^315212565 is an apocalyptic number.

It is an amenable number.

315212565 is a deficient number, since it is larger than the sum of its proper divisors (217077963).

315212565 is a wasteful number, since it uses less digits than its factorization.

315212565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58257 (or 58238 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 315212565 is about 17754.2266798642. The cubic root of 315212565 is about 680.5622260540.

The spelling of 315212565 in words is "three hundred fifteen million, two hundred twelve thousand, five hundred sixty-five".