317771431717 has 2 divisors, whose sum is σ = 317771431718. Its totient is φ = 317771431716.

The previous prime is 317771431673. The next prime is 317771431753. The reversal of 317771431717 is 717134177713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218419761316 + 99351670401 = 467354^2 + 315201^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-317771431717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317771431787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158885715858 + 158885715859.

It is an arithmetic number, because the mean of its divisors is an integer number (158885715859).

Almost surely, 2^317771431717 is an apocalyptic number.

It is an amenable number.

317771431717 is a deficient number, since it is larger than the sum of its proper divisors (1).

317771431717 is an equidigital number, since it uses as much as digits as its factorization.

317771431717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 605052, while the sum is 49.

The spelling of 317771431717 in words is "three hundred seventeen billion, seven hundred seventy-one million, four hundred thirty-one thousand, seven hundred seventeen".