315906 has 16 divisors (see below), whose sum is σ = 649344. Its totient is φ = 102384.

The previous prime is 315899. The next prime is 315907. The reversal of 315906 is 609513.

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 315906.

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

315906 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490 + ... + 933.

It is an arithmetic number, because the mean of its divisors is an integer number (40584).

2³¹⁵⁹⁰⁶ is an apocalyptic number.

315906 is an abundant number, since it is smaller than the sum of its proper divisors (333438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315906 is a wasteful number, since it uses less digits than its factorization.

315906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 315906 is about 562.0551574356. The cubic root of 315906 is about 68.1060916017.

It can be divided in two parts, 315 and 906, that multiplied together give a triangular number (285390 = T₇₅₅).

The spelling of 315906 in words is "three hundred fifteen thousand, nine hundred six".