317939 has 4 divisors (see below), whose sum is σ = 319200. Its totient is φ = 316680.

The previous prime is 317923. The next prime is 317957. The reversal of 317939 is 939713.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 317939 - 2⁴ = 317923 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 317939.

It is not an unprimeable number, because it can be changed into a prime (317959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107 + ... + 804.

It is an arithmetic number, because the mean of its divisors is an integer number (79800).

2³¹⁷⁹³⁹ is an apocalyptic number.

317939 is a deficient number, since it is larger than the sum of its proper divisors (1261).

317939 is an equidigital number, since it uses as much as digits as its factorization.

317939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260.

The product of its digits is 5103, while the sum is 32.

The square root of 317939 is about 563.8607984246. The cubic root of 317939 is about 68.2518772936.

The spelling of 317939 in words is "three hundred seventeen thousand, nine hundred thirty-nine".