131320132331081 has 2 divisors, whose sum is σ = 131320132331082. Its totient is φ = 131320132331080.

The previous prime is 131320132331071. The next prime is 131320132331107. The reversal of 131320132331081 is 180133231023131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126333463713856 + 4986668617225 = 11239816^2 + 2233085^2 .

It is a cyclic number.

It is not a de Polignac number, because 131320132331081 - 2⁴⁶ = 60951388153417 is a prime.

It is a super-2 number, since 2×131320132331081² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (131320132331041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65660066165540 + 65660066165541.

It is an arithmetic number, because the mean of its divisors is an integer number (65660066165541).

Almost surely, 2^{131320132331081} is an apocalyptic number.

It is an amenable number.

131320132331081 is a deficient number, since it is larger than the sum of its proper divisors (1).

131320132331081 is an equidigital number, since it uses as much as digits as its factorization.

131320132331081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 131320132331081 in words is "one hundred thirty-one trillion, three hundred twenty billion, one hundred thirty-two million, three hundred thirty-one thousand, eighty-one".