131336579377 has 2 divisors, whose sum is σ = 131336579378. Its totient is φ = 131336579376.

The previous prime is 131336579359. The next prime is 131336579411. The reversal of 131336579377 is 773975633131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90239559201 + 41097020176 = 300399^2 + 202724^2 .

It is a cyclic number.

It is not a de Polignac number, because 131336579377 - 2³⁵ = 96976841009 is a prime.

It is not a weakly prime, because it can be changed into another prime (131336579477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65668289688 + 65668289689.

It is an arithmetic number, because the mean of its divisors is an integer number (65668289689).

Almost surely, 2^131336579377 is an apocalyptic number.

It is an amenable number.

131336579377 is a deficient number, since it is larger than the sum of its proper divisors (1).

131336579377 is an equidigital number, since it uses as much as digits as its factorization.

131336579377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7501410, while the sum is 55.

The spelling of 131336579377 in words is "one hundred thirty-one billion, three hundred thirty-six million, five hundred seventy-nine thousand, three hundred seventy-seven".