317156743922 has 6 divisors (see below), whose sum is σ = 475736310543. Its totient is φ = 158577973742.

The previous prime is 317156743919. The next prime is 317156743949. The reversal of 317156743922 is 229347651713.

It can be written as a sum of positive squares in only one way, i.e., 158578371961 + 158578371961 = 398219^2 + 398219^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=398219.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 597329 + ... + 995547.

Almost surely, 2^317156743922 is an apocalyptic number.

317156743922 is a deficient number, since it is larger than the sum of its proper divisors (158579566621).

317156743922 is an frugal number, since it uses more digits than its factorization.

317156743922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796440 (or 398221 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 50.

Multiplying 317156743922 by its sum of digits (50), we get a square (15857837196100 = 3982190²).

The spelling of 317156743922 in words is "three hundred seventeen billion, one hundred fifty-six million, seven hundred forty-three thousand, nine hundred twenty-two".