131099205877 has 2 divisors, whose sum is σ = 131099205878. Its totient is φ = 131099205876.

The previous prime is 131099205851. The next prime is 131099205893. The reversal of 131099205877 is 778502990131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74790763441 + 56308442436 = 273479^2 + 237294^2 .

It is an emirp because it is prime and its reverse (778502990131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131099205877 - 2³⁵ = 96739467509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131099205817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65549602938 + 65549602939.

It is an arithmetic number, because the mean of its divisors is an integer number (65549602939).

Almost surely, 2^131099205877 is an apocalyptic number.

It is an amenable number.

131099205877 is a deficient number, since it is larger than the sum of its proper divisors (1).

131099205877 is an equidigital number, since it uses as much as digits as its factorization.

131099205877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 952560, while the sum is 52.

The spelling of 131099205877 in words is "one hundred thirty-one billion, ninety-nine million, two hundred five thousand, eight hundred seventy-seven".