316520 has 32 divisors (see below), whose sum is σ = 733320. Its totient is φ = 122880.

The previous prime is 316507. The next prime is 316531. The reversal of 316520 is 25613.

It can be written as a sum of positive squares in 4 ways, for example, as 128164 + 188356 = 358^2 + 434^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1544 + ... + 1736.

2³¹⁶⁵²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 316520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366660).

316520 is an abundant number, since it is smaller than the sum of its proper divisors (416800).

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

316520 is a wasteful number, since it uses less digits than its factorization.

316520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 316520 is about 562.6011020252. The cubic root of 316520 is about 68.1501870787.

Multiplying 316520 by its sum of digits (17), we get a triangular number (5380840 = T₃₂₈₀).

The spelling of 316520 in words is "three hundred sixteen thousand, five hundred twenty".