317844 has 42 divisors (see below), whose sum is σ = 841610. Its totient is φ = 104976.

The previous prime is 317839. The next prime is 317857. The reversal of 317844 is 448713.

It can be written as a sum of positive squares in only one way, i.e., 291600 + 26244 = 540^2 + 162^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

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 317844.

It is an unprimeable number.

317844 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 13 ways as a sum of consecutive naturals, for example, 2862 + ... + 2970.

2³¹⁷⁸⁴⁴ 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 317844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420805).

317844 is an abundant number, since it is smaller than the sum of its proper divisors (523766).

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

317844 is a wasteful number, since it uses less digits than its factorization.

317844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 114 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 317844 is about 563.7765514812. The cubic root of 317844 is about 68.2450787419.

It can be divided in two parts, 31 and 7844, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 317844 in words is "three hundred seventeen thousand, eight hundred forty-four".