131065244021 has 2 divisors, whose sum is σ = 131065244022. Its totient is φ = 131065244020.

The previous prime is 131065243951. The next prime is 131065244053. The reversal of 131065244021 is 120442560131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108389100625 + 22676143396 = 329225^2 + 150586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131065244021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131065294021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65532622010 + 65532622011.

It is an arithmetic number, because the mean of its divisors is an integer number (65532622011).

Almost surely, 2^131065244021 is an apocalyptic number.

It is an amenable number.

131065244021 is a deficient number, since it is larger than the sum of its proper divisors (1).

131065244021 is an equidigital number, since it uses as much as digits as its factorization.

131065244021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 131065244021 in words is "one hundred thirty-one billion, sixty-five million, two hundred forty-four thousand, twenty-one".