317140376321 has 2 divisors, whose sum is σ = 317140376322. Its totient is φ = 317140376320.

The previous prime is 317140376279. The next prime is 317140376323. The reversal of 317140376321 is 123673041713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312133398721 + 5006977600 = 558689^2 + 70760^2 .

It is a cyclic number.

It is not a de Polignac number, because 317140376321 - 2⁶ = 317140376257 is a prime.

Together with 317140376323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (317140376323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158570188160 + 158570188161.

It is an arithmetic number, because the mean of its divisors is an integer number (158570188161).

Almost surely, 2^317140376321 is an apocalyptic number.

It is an amenable number.

317140376321 is a deficient number, since it is larger than the sum of its proper divisors (1).

317140376321 is an equidigital number, since it uses as much as digits as its factorization.

317140376321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 38.

The spelling of 317140376321 in words is "three hundred seventeen billion, one hundred forty million, three hundred seventy-six thousand, three hundred twenty-one".