315902 has 4 divisors (see below), whose sum is σ = 473856. Its totient is φ = 157950.

The previous prime is 315899. The next prime is 315907. The reversal of 315902 is 209513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 209513 = 19 ⋅11027.

It is an Ulam 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 315902.

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 as a sum of consecutive naturals, namely, 78974 + ... + 78977.

It is an arithmetic number, because the mean of its divisors is an integer number (118464).

2³¹⁵⁹⁰² is an apocalyptic number.

315902 is a deficient number, since it is larger than the sum of its proper divisors (157954).

315902 is a wasteful number, since it uses less digits than its factorization.

315902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157953.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 315902 is about 562.0515990547. The cubic root of 315902 is about 68.1058041475.

The spelling of 315902 in words is "three hundred fifteen thousand, nine hundred two".