131371883557 has 2 divisors, whose sum is σ = 131371883558. Its totient is φ = 131371883556.

The previous prime is 131371883509. The next prime is 131371883561. The reversal of 131371883557 is 755388173131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121103304001 + 10268579556 = 347999^2 + 101334^2 .

It is a cyclic number.

It is not a de Polignac number, because 131371883557 - 2⁷ = 131371883429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131371583557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65685941778 + 65685941779.

It is an arithmetic number, because the mean of its divisors is an integer number (65685941779).

Almost surely, 2^131371883557 is an apocalyptic number.

It is an amenable number.

131371883557 is a deficient number, since it is larger than the sum of its proper divisors (1).

131371883557 is an equidigital number, since it uses as much as digits as its factorization.

131371883557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2116800, while the sum is 52.

The spelling of 131371883557 in words is "one hundred thirty-one billion, three hundred seventy-one million, eight hundred eighty-three thousand, five hundred fifty-seven".