131081174779 has 2 divisors, whose sum is σ = 131081174780. Its totient is φ = 131081174778.

The previous prime is 131081174767. The next prime is 131081174813. The reversal of 131081174779 is 977471180131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131081174779 - 2⁹ = 131081174267 is a prime.

It is not a weakly prime, because it can be changed into another prime (131081574779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65540587389 + 65540587390.

It is an arithmetic number, because the mean of its divisors is an integer number (65540587390).

Almost surely, 2^131081174779 is an apocalyptic number.

131081174779 is a deficient number, since it is larger than the sum of its proper divisors (1).

131081174779 is an equidigital number, since it uses as much as digits as its factorization.

131081174779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 296352, while the sum is 49.

The spelling of 131081174779 in words is "one hundred thirty-one billion, eighty-one million, one hundred seventy-four thousand, seven hundred seventy-nine".