315391589 has 12 divisors (see below), whose sum is σ = 327498948. Its totient is φ = 303696000.

The previous prime is 315391553. The next prime is 315391603. The reversal of 315391589 is 985193513.

It can be written as a sum of positive squares in 6 ways, for example, as 162052900 + 153338689 = 12730^2 + 12383^2 .

It is not a de Polignac number, because 315391589 - 2⁸ = 315391333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315391789) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137129 + ... + 139409.

It is an arithmetic number, because the mean of its divisors is an integer number (27291579).

Almost surely, 2^315391589 is an apocalyptic number.

It is an amenable number.

315391589 is a deficient number, since it is larger than the sum of its proper divisors (12107359).

315391589 is a wasteful number, since it uses less digits than its factorization.

315391589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456 (or 2419 counting only the distinct ones).

The product of its digits is 145800, while the sum is 44.

The square root of 315391589 is about 17759.2676932356. The cubic root of 315391589 is about 680.6910427395.

The spelling of 315391589 in words is "three hundred fifteen million, three hundred ninety-one thousand, five hundred eighty-nine".