317449687691 has 4 divisors (see below), whose sum is σ = 318359286000. Its totient is φ = 316540089384.

The previous prime is 317449687657. The next prime is 317449687703. The reversal of 317449687691 is 196786944713.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196786944713 = 53 ⋅3712961221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-317449687691 is a prime.

It is a super-2 number, since 2×317449687691² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (317449687651) 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, 454798631 + ... + 454799328.

It is an arithmetic number, because the mean of its divisors is an integer number (79589821500).

Almost surely, 2^317449687691 is an apocalyptic number.

317449687691 is a deficient number, since it is larger than the sum of its proper divisors (909598309).

317449687691 is an equidigital number, since it uses as much as digits as its factorization.

317449687691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909598308.

The product of its digits is 54867456, while the sum is 65.

The spelling of 317449687691 in words is "three hundred seventeen billion, four hundred forty-nine million, six hundred eighty-seven thousand, six hundred ninety-one".