317123436557 has 2 divisors, whose sum is σ = 317123436558. Its totient is φ = 317123436556.

The previous prime is 317123436541. The next prime is 317123436589. The reversal of 317123436557 is 755634321713.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 312725889961 + 4397546596 = 559219^2 + 66314^2 .

It is a cyclic number.

It is not a de Polignac number, because 317123436557 - 2⁴ = 317123436541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317123466557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158561718278 + 158561718279.

It is an arithmetic number, because the mean of its divisors is an integer number (158561718279).

Almost surely, 2^317123436557 is an apocalyptic number.

It is an amenable number.

317123436557 is a deficient number, since it is larger than the sum of its proper divisors (1).

317123436557 is an equidigital number, since it uses as much as digits as its factorization.

317123436557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1587600, while the sum is 47.

The spelling of 317123436557 in words is "three hundred seventeen billion, one hundred twenty-three million, four hundred thirty-six thousand, five hundred fifty-seven".