317904 has 40 divisors (see below), whose sum is σ = 848160. Its totient is φ = 102528.

The previous prime is 317903. The next prime is 317921. The reversal of 317904 is 409713.

317904 is nontrivially palindromic in base 5.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 317904.

It is not an unprimeable number, because it can be changed into a prime (317903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1687 + ... + 1865.

It is an arithmetic number, because the mean of its divisors is an integer number (21204).

2³¹⁷⁹⁰⁴ 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 317904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (424080).

317904 is an abundant number, since it is smaller than the sum of its proper divisors (530256).

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

317904 is a wasteful number, since it uses less digits than its factorization.

317904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 317904 is about 563.8297615415. The cubic root of 317904 is about 68.2493727216.

Subtracting 317904 from its reverse (409713), we obtain a square (91809 = 303²).

It can be divided in two parts, 317 and 904, that added together give a palindrome (1221).

The spelling of 317904 in words is "three hundred seventeen thousand, nine hundred four".