317742911947 has 2 divisors, whose sum is σ = 317742911948. Its totient is φ = 317742911946.

The previous prime is 317742911933. The next prime is 317742911971. The reversal of 317742911947 is 749119247713.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-317742911947 is a prime.

It is not a weakly prime, because it can be changed into another prime (317742911987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158871455973 + 158871455974.

It is an arithmetic number, because the mean of its divisors is an integer number (158871455974).

Almost surely, 2^317742911947 is an apocalyptic number.

317742911947 is a deficient number, since it is larger than the sum of its proper divisors (1).

317742911947 is an equidigital number, since it uses as much as digits as its factorization.

317742911947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2667168, while the sum is 55.

The spelling of 317742911947 in words is "three hundred seventeen billion, seven hundred forty-two million, nine hundred eleven thousand, nine hundred forty-seven".