317680997 has 4 divisors (see below), whose sum is σ = 325429356. Its totient is φ = 309932640.

The previous prime is 317680981. The next prime is 317681003. The reversal of 317680997 is 799086713.

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 32273761 + 285407236 = 5681^2 + 16894^2 .

It is a cyclic number.

It is not a de Polignac number, because 317680997 - 2⁴ = 317680981 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 (317680907) 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, 3874118 + ... + 3874199.

It is an arithmetic number, because the mean of its divisors is an integer number (81357339).

Almost surely, 2^317680997 is an apocalyptic number.

It is an amenable number.

317680997 is a deficient number, since it is larger than the sum of its proper divisors (7748359).

317680997 is an equidigital number, since it uses as much as digits as its factorization.

317680997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7748358.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 317680997 is about 17823.6078558747. The cubic root of 317680997 is about 682.3341048665.

The spelling of 317680997 in words is "three hundred seventeen million, six hundred eighty thousand, nine hundred ninety-seven".