317946338497 has 2 divisors, whose sum is σ = 317946338498. Its totient is φ = 317946338496.

The previous prime is 317946338467. The next prime is 317946338519. The reversal of 317946338497 is 794833649713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314677243521 + 3269094976 = 560961^2 + 57176^2 .

It is an emirp because it is prime and its reverse (794833649713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 317946338497 - 2³¹ = 315798854849 is a prime.

It is not a weakly prime, because it can be changed into another prime (317946338467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158973169248 + 158973169249.

It is an arithmetic number, because the mean of its divisors is an integer number (158973169249).

Almost surely, 2^317946338497 is an apocalyptic number.

It is an amenable number.

317946338497 is a deficient number, since it is larger than the sum of its proper divisors (1).

317946338497 is an equidigital number, since it uses as much as digits as its factorization.

317946338497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82301184, while the sum is 64.

The spelling of 317946338497 in words is "three hundred seventeen billion, nine hundred forty-six million, three hundred thirty-eight thousand, four hundred ninety-seven".