131249548841 has 2 divisors, whose sum is σ = 131249548842. Its totient is φ = 131249548840.

The previous prime is 131249548831. The next prime is 131249548873. The reversal of 131249548841 is 148845942131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111441801241 + 19807747600 = 333829^2 + 140740^2 .

It is a cyclic number.

It is not a de Polignac number, because 131249548841 - 2¹⁸ = 131249286697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131249548841.

It is not a weakly prime, because it can be changed into another prime (131249548831) 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, 65624774420 + 65624774421.

It is an arithmetic number, because the mean of its divisors is an integer number (65624774421).

Almost surely, 2^131249548841 is an apocalyptic number.

It is an amenable number.

131249548841 is a deficient number, since it is larger than the sum of its proper divisors (1).

131249548841 is an equidigital number, since it uses as much as digits as its factorization.

131249548841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1105920, while the sum is 50.

The spelling of 131249548841 in words is "one hundred thirty-one billion, two hundred forty-nine million, five hundred forty-eight thousand, eight hundred forty-one".