318320317 has 6 divisors (see below), whose sum is σ = 370291038. Its totient is φ = 272845944.

The previous prime is 318320273. The next prime is 318320333. The reversal of 318320317 is 713023813.

It can be written as a sum of positive squares in only one way, i.e., 263055961 + 55264356 = 16219^2 + 7434^2 .

It is not a de Polignac number, because 318320317 - 2¹¹ = 318318269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318320347) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3248118 + ... + 3248215.

It is an arithmetic number, because the mean of its divisors is an integer number (61715173).

Almost surely, 2^318320317 is an apocalyptic number.

It is an amenable number.

318320317 is a deficient number, since it is larger than the sum of its proper divisors (51970721).

318320317 is an equidigital number, since it uses as much as digits as its factorization.

318320317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6496347 (or 6496340 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 318320317 is about 17841.5334822991. The cubic root of 318320317 is about 682.7915213096.

The spelling of 318320317 in words is "three hundred eighteen million, three hundred twenty thousand, three hundred seventeen".