131395581937 has 2 divisors, whose sum is σ = 131395581938. Its totient is φ = 131395581936.

The previous prime is 131395581871. The next prime is 131395581953. The reversal of 131395581937 is 739185593131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118291972096 + 13103609841 = 343936^2 + 114471^2 .

It is a cyclic number.

It is not a de Polignac number, because 131395581937 - 2¹⁵ = 131395549169 is a prime.

It is not a weakly prime, because it can be changed into another prime (131395581337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65697790968 + 65697790969.

It is an arithmetic number, because the mean of its divisors is an integer number (65697790969).

Almost surely, 2^131395581937 is an apocalyptic number.

It is an amenable number.

131395581937 is a deficient number, since it is larger than the sum of its proper divisors (1).

131395581937 is an equidigital number, since it uses as much as digits as its factorization.

131395581937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3061800, while the sum is 55.

The spelling of 131395581937 in words is "one hundred thirty-one billion, three hundred ninety-five million, five hundred eighty-one thousand, nine hundred thirty-seven".