317874333521 has 2 divisors, whose sum is σ = 317874333522. Its totient is φ = 317874333520.

The previous prime is 317874333481. The next prime is 317874333533. The reversal of 317874333521 is 125333478713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282985697296 + 34888636225 = 531964^2 + 186785^2 .

It is a cyclic number.

It is not a de Polignac number, because 317874333521 - 2¹⁰ = 317874332497 is a prime.

It is a super-2 number, since 2×317874333521² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (317874333421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158937166760 + 158937166761.

It is an arithmetic number, because the mean of its divisors is an integer number (158937166761).

Almost surely, 2^317874333521 is an apocalyptic number.

It is an amenable number.

317874333521 is a deficient number, since it is larger than the sum of its proper divisors (1).

317874333521 is an equidigital number, since it uses as much as digits as its factorization.

317874333521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 47.

The spelling of 317874333521 in words is "three hundred seventeen billion, eight hundred seventy-four million, three hundred thirty-three thousand, five hundred twenty-one".