315243137 has 16 divisors (see below), whose sum is σ = 364452480. Its totient is φ = 269942400.

The previous prime is 315243133. The next prime is 315243157. The reversal of 315243137 is 731342513.

It is a cyclic number.

It is not a de Polignac number, because 315243137 - 2² = 315243133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315243133) 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, 1028 + ... + 25130.

It is an arithmetic number, because the mean of its divisors is an integer number (22778280).

Almost surely, 2^315243137 is an apocalyptic number.

It is an amenable number.

315243137 is a deficient number, since it is larger than the sum of its proper divisors (49209343).

315243137 is a wasteful number, since it uses less digits than its factorization.

315243137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24184.

The product of its digits is 7560, while the sum is 29.

The square root of 315243137 is about 17755.0876370690. The cubic root of 315243137 is about 680.5842275836.

The spelling of 315243137 in words is "three hundred fifteen million, two hundred forty-three thousand, one hundred thirty-seven".