315516 has 12 divisors (see below), whose sum is σ = 736232. Its totient is φ = 105168.

The previous prime is 315493. The next prime is 315517. The reversal of 315516 is 615513.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 315492 and 315501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315517) by changing a digit.

315516 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 3 ways as a sum of consecutive naturals, for example, 13135 + ... + 13158.

2³¹⁵⁵¹⁶ is an apocalyptic number.

It is an amenable number.

315516 is an abundant number, since it is smaller than the sum of its proper divisors (420716).

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

315516 is a wasteful number, since it uses less digits than its factorization.

315516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26300 (or 26298 counting only the distinct ones).

The product of its digits is 450, while the sum is 21.

The square root of 315516 is about 561.7081092525. The cubic root of 315516 is about 68.0780533945.

The spelling of 315516 in words is "three hundred fifteen thousand, five hundred sixteen".