131455176731 has 2 divisors, whose sum is σ = 131455176732. Its totient is φ = 131455176730.

The previous prime is 131455176617. The next prime is 131455176733. The reversal of 131455176731 is 137671554131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131455176731 is a prime.

It is a super-2 number, since 2×131455176731² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 131455176733, 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 (131455176733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65727588365 + 65727588366.

It is an arithmetic number, because the mean of its divisors is an integer number (65727588366).

Almost surely, 2^131455176731 is an apocalyptic number.

131455176731 is a deficient number, since it is larger than the sum of its proper divisors (1).

131455176731 is an equidigital number, since it uses as much as digits as its factorization.

131455176731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 264600, while the sum is 44.

The spelling of 131455176731 in words is "one hundred thirty-one billion, four hundred fifty-five million, one hundred seventy-six thousand, seven hundred thirty-one".