317381 has 4 divisors (see below), whose sum is σ = 325164. Its totient is φ = 309600.

The previous prime is 317371. The next prime is 317399. The reversal of 317381 is 183713.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36481 + 280900 = 191^2 + 530^2 .

It is a cyclic number.

It is not a de Polignac number, because 317381 - 2¹⁴ = 300997 is a prime.

It is a super-2 number, since 2×317381² = 201461398322, which contains 22 as substring.

It is a Duffinian number.

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 317381.

It is not an unprimeable number, because it can be changed into a prime (317321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3830 + ... + 3911.

It is an arithmetic number, because the mean of its divisors is an integer number (81291).

2³¹⁷³⁸¹ is an apocalyptic number.

It is an amenable number.

317381 is a deficient number, since it is larger than the sum of its proper divisors (7783).

317381 is an equidigital number, since it uses as much as digits as its factorization.

317381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7782.

The product of its digits is 504, while the sum is 23.

The square root of 317381 is about 563.3657781584. The cubic root of 317381 is about 68.2119253433.

The spelling of 317381 in words is "three hundred seventeen thousand, three hundred eighty-one".