315231129 has 8 divisors (see below), whose sum is σ = 467009120. Its totient is φ = 210154068.

The previous prime is 315231127. The next prime is 315231143. The reversal of 315231129 is 921132513.

It is not a de Polignac number, because 315231129 - 2¹ = 315231127 is a prime.

It is a super-2 number, since 2×315231129² = 198741329381229282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 11675227 = 315231129 / (3 + 1 + 5 + 2 + 3 + 1 + 1 + 2 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315231127) 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 7 ways as a sum of consecutive naturals, for example, 5837587 + ... + 5837640.

It is an arithmetic number, because the mean of its divisors is an integer number (58376140).

Almost surely, 2^315231129 is an apocalyptic number.

It is an amenable number.

315231129 is a deficient number, since it is larger than the sum of its proper divisors (151777991).

315231129 is a wasteful number, since it uses less digits than its factorization.

315231129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11675236 (or 11675230 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 315231129 is about 17754.7494772526. The cubic root of 315231129 is about 680.5755860429.

The spelling of 315231129 in words is "three hundred fifteen million, two hundred thirty-one thousand, one hundred twenty-nine".