315957 has 4 divisors (see below), whose sum is σ = 421280. Its totient is φ = 210636.

The previous prime is 315949. The next prime is 315961. The reversal of 315957 is 759513.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 315957 - 2³ = 315949 is a prime.

It is a D-number.

It is a Duffinian number.

315957 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 315957.

It is not an unprimeable number, because it can be changed into a prime (315907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52657 + ... + 52662.

It is an arithmetic number, because the mean of its divisors is an integer number (105320).

2³¹⁵⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

315957 is a deficient number, since it is larger than the sum of its proper divisors (105323).

315957 is a wasteful number, since it uses less digits than its factorization.

315957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105322.

The product of its digits is 4725, while the sum is 30.

The square root of 315957 is about 562.1005248174. The cubic root of 315957 is about 68.1097564300.

Subtracting 315957 from its reverse (759513), we obtain a square (443556 = 666²).

The spelling of 315957 in words is "three hundred fifteen thousand, nine hundred fifty-seven".