315895 has 4 divisors (see below), whose sum is σ = 379080. Its totient is φ = 252712.

The previous prime is 315893. The next prime is 315899. The reversal of 315895 is 598513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 598513 = 83 ⋅7211.

It is a cyclic number.

It is not a de Polignac number, because 315895 - 2¹ = 315893 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 315895.

It is not an unprimeable number, because it can be changed into a prime (315893) 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, 31585 + ... + 31594.

It is an arithmetic number, because the mean of its divisors is an integer number (94770).

2³¹⁵⁸⁹⁵ is an apocalyptic number.

315895 is a deficient number, since it is larger than the sum of its proper divisors (63185).

315895 is an equidigital number, since it uses as much as digits as its factorization.

315895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63184.

The product of its digits is 5400, while the sum is 31.

The square root of 315895 is about 562.0453718340. The cubic root of 315895 is about 68.1053010968.

The spelling of 315895 in words is "three hundred fifteen thousand, eight hundred ninety-five".