317211482721 has 24 divisors (see below), whose sum is σ = 498741246624. Its totient is φ = 178780633920.

The previous prime is 317211482683. The next prime is 317211482737. The reversal of 317211482721 is 127284112713.

It is a happy number.

It is not a de Polignac number, because 317211482721 - 2⁹ = 317211482209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 317211482721.

It is not an unprimeable number, because it can be changed into a prime (317211482821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14769415 + ... + 14790876.

It is an arithmetic number, because the mean of its divisors is an integer number (20780885276).

Almost surely, 2^317211482721 is an apocalyptic number.

It is an amenable number.

317211482721 is a deficient number, since it is larger than the sum of its proper divisors (181529763903).

317211482721 is a wasteful number, since it uses less digits than its factorization.

317211482721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29560381 (or 29560374 counting only the distinct ones).

The product of its digits is 37632, while the sum is 39.

The spelling of 317211482721 in words is "three hundred seventeen billion, two hundred eleven million, four hundred eighty-two thousand, seven hundred twenty-one".