317143720697 has 2 divisors, whose sum is σ = 317143720698. Its totient is φ = 317143720696.

The previous prime is 317143720627. The next prime is 317143720721. The reversal of 317143720697 is 796027341713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 307408149136 + 9735571561 = 554444^2 + 98669^2 .

It is a cyclic number.

It is not a de Polignac number, because 317143720697 - 2²⁶ = 317076611833 is a prime.

It is not a weakly prime, because it can be changed into another prime (317143720627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158571860348 + 158571860349.

It is an arithmetic number, because the mean of its divisors is an integer number (158571860349).

Almost surely, 2^317143720697 is an apocalyptic number.

It is an amenable number.

317143720697 is a deficient number, since it is larger than the sum of its proper divisors (1).

317143720697 is an equidigital number, since it uses as much as digits as its factorization.

317143720697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1333584, while the sum is 50.

The spelling of 317143720697 in words is "three hundred seventeen billion, one hundred forty-three million, seven hundred twenty thousand, six hundred ninety-seven".