131996457701 has 2 divisors, whose sum is σ = 131996457702. Its totient is φ = 131996457700.

The previous prime is 131996457689. The next prime is 131996457727. The reversal of 131996457701 is 107754699131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131750124676 + 246333025 = 362974^2 + 15695^2 .

It is a cyclic number.

It is not a de Polignac number, because 131996457701 - 2²² = 131992263397 is a prime.

It is a super-2 number, since 2×131996457701² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131996457731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65998228850 + 65998228851.

It is an arithmetic number, because the mean of its divisors is an integer number (65998228851).

Almost surely, 2^131996457701 is an apocalyptic number.

It is an amenable number.

131996457701 is a deficient number, since it is larger than the sum of its proper divisors (1).

131996457701 is an equidigital number, since it uses as much as digits as its factorization.

131996457701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1428840, while the sum is 53.

The spelling of 131996457701 in words is "one hundred thirty-one billion, nine hundred ninety-six million, four hundred fifty-seven thousand, seven hundred one".