131021234141977 has 2 divisors, whose sum is σ = 131021234141978. Its totient is φ = 131021234141976.

The previous prime is 131021234141867. The next prime is 131021234142031. The reversal of 131021234141977 is 779141432120131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85594119420681 + 45427114721296 = 9251709^2 + 6739964^2 .

It is a cyclic number.

It is not a de Polignac number, because 131021234141977 - 2²⁷ = 131021099924249 is a prime.

It is not a weakly prime, because it can be changed into another prime (131021234841977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65510617070988 + 65510617070989.

It is an arithmetic number, because the mean of its divisors is an integer number (65510617070989).

Almost surely, 2^{131021234141977} is an apocalyptic number.

It is an amenable number.

131021234141977 is a deficient number, since it is larger than the sum of its proper divisors (1).

131021234141977 is an equidigital number, since it uses as much as digits as its factorization.

131021234141977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 131021234141977 in words is "one hundred thirty-one trillion, twenty-one billion, two hundred thirty-four million, one hundred forty-one thousand, nine hundred seventy-seven".