317730313 has 4 divisors (see below), whose sum is σ = 320645380. Its totient is φ = 314815248.

The previous prime is 317730307. The next prime is 317730319. The reversal of 317730313 is 313037713.

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

It is an interprime number because it is at equal distance from previous prime (317730307) and next prime (317730319).

It can be written as a sum of positive squares in 2 ways, for example, as 257698809 + 60031504 = 16053^2 + 7748^2 .

It is a cyclic number.

It is not a de Polignac number, because 317730313 - 2²¹ = 315633161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (317730319) 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, 1457370 + ... + 1457587.

It is an arithmetic number, because the mean of its divisors is an integer number (80161345).

Almost surely, 2^317730313 is an apocalyptic number.

It is an amenable number.

317730313 is a deficient number, since it is larger than the sum of its proper divisors (2915067).

317730313 is a wasteful number, since it uses less digits than its factorization.

317730313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2915066.

The product of its (nonzero) digits is 3969, while the sum is 28.

The square root of 317730313 is about 17824.9912482447. The cubic root of 317730313 is about 682.3694109838.

The spelling of 317730313 in words is "three hundred seventeen million, seven hundred thirty thousand, three hundred thirteen".