317217653689 has 2 divisors, whose sum is σ = 317217653690. Its totient is φ = 317217653688.

The previous prime is 317217653681. The next prime is 317217653693. The reversal of 317217653689 is 986356712713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191391375289 + 125826278400 = 437483^2 + 354720^2 .

It is an emirp because it is prime and its reverse (986356712713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 317217653689 - 2³ = 317217653681 is a prime.

It is not a weakly prime, because it can be changed into another prime (317217653681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158608826844 + 158608826845.

It is an arithmetic number, because the mean of its divisors is an integer number (158608826845).

Almost surely, 2^317217653689 is an apocalyptic number.

It is an amenable number.

317217653689 is a deficient number, since it is larger than the sum of its proper divisors (1).

317217653689 is an equidigital number, since it uses as much as digits as its factorization.

317217653689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11430720, while the sum is 58.

The spelling of 317217653689 in words is "three hundred seventeen billion, two hundred seventeen million, six hundred fifty-three thousand, six hundred eighty-nine".