131368998972317 has 2 divisors, whose sum is σ = 131368998972318. Its totient is φ = 131368998972316.

The previous prime is 131368998972257. The next prime is 131368998972319. The reversal of 131368998972317 is 713279899863131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100657296561721 + 30711702410596 = 10032811^2 + 5541814^2 .

It is a cyclic number.

It is not a de Polignac number, because 131368998972317 - 2⁸ = 131368998972061 is a prime.

It is a super-3 number, since 3×131368998972317³ (a number of 43 digits) contains 333 as substring.

Together with 131368998972319, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131368998972319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65684499486158 + 65684499486159.

It is an arithmetic number, because the mean of its divisors is an integer number (65684499486159).

Almost surely, 2^{131368998972317} is an apocalyptic number.

It is an amenable number.

131368998972317 is a deficient number, since it is larger than the sum of its proper divisors (1).

131368998972317 is an equidigital number, since it uses as much as digits as its factorization.

131368998972317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 740710656, while the sum is 77.

The spelling of 131368998972317 in words is "one hundred thirty-one trillion, three hundred sixty-eight billion, nine hundred ninety-eight million, nine hundred seventy-two thousand, three hundred seventeen".