317680 has 60 divisors (see below), whose sum is σ = 850392. Its totient is φ = 109440.

The previous prime is 317671. The next prime is 317693. The reversal of 317680 is 86713.

It is a congruent number.

It is an unprimeable number.

317680 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 11 ways as a sum of consecutive naturals, for example, 16711 + ... + 16729.

2³¹⁷⁶⁸⁰ 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 317680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (425196).

317680 is an abundant number, since it is smaller than the sum of its proper divisors (532712).

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

317680 is a wasteful number, since it uses less digits than its factorization.

317680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 317680 is about 563.6310850193. The cubic root of 317680 is about 68.2333391060.

The spelling of 317680 in words is "three hundred seventeen thousand, six hundred eighty".