317681 has 8 divisors (see below), whose sum is σ = 391104. Its totient is φ = 251280.

The previous prime is 317671. The next prime is 317693. The reversal of 317681 is 186713.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 317681 - 2⁶ = 317617 is a prime.

It is a super-2 number, since 2×317681² = 201842435522, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 317681.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 317681.

It is not an unprimeable number, because it can be changed into a prime (317621) 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, 1655 + ... + 1836.

It is an arithmetic number, because the mean of its divisors is an integer number (48888).

2³¹⁷⁶⁸¹ is an apocalyptic number.

It is an amenable number.

317681 is a deficient number, since it is larger than the sum of its proper divisors (73423).

317681 is a wasteful number, since it uses less digits than its factorization.

317681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3511.

The product of its digits is 1008, while the sum is 26.

The square root of 317681 is about 563.6319721237. The cubic root of 317681 is about 68.2334107014.

The spelling of 317681 in words is "three hundred seventeen thousand, six hundred eighty-one".