317478874729 has 2 divisors, whose sum is σ = 317478874730. Its totient is φ = 317478874728.

The previous prime is 317478874703. The next prime is 317478874733. The reversal of 317478874729 is 927478874713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235438448400 + 82040426329 = 485220^2 + 286427^2 .

It is a cyclic number.

It is not a de Polignac number, because 317478874729 - 2¹⁷ = 317478743657 is a prime.

It is not a weakly prime, because it can be changed into another prime (317478875729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158739437364 + 158739437365.

It is an arithmetic number, because the mean of its divisors is an integer number (158739437365).

Almost surely, 2^317478874729 is an apocalyptic number.

It is an amenable number.

317478874729 is a deficient number, since it is larger than the sum of its proper divisors (1).

317478874729 is an equidigital number, since it uses as much as digits as its factorization.

317478874729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132765696, while the sum is 67.

The spelling of 317478874729 in words is "three hundred seventeen billion, four hundred seventy-eight million, eight hundred seventy-four thousand, seven hundred twenty-nine".