131507313757 has 2 divisors, whose sum is σ = 131507313758. Its totient is φ = 131507313756.

The previous prime is 131507313733. The next prime is 131507313787. The reversal of 131507313757 is 757313705131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76922467801 + 54584845956 = 277349^2 + 233634^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131507313757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131507313727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65753656878 + 65753656879.

It is an arithmetic number, because the mean of its divisors is an integer number (65753656879).

Almost surely, 2^131507313757 is an apocalyptic number.

It is an amenable number.

131507313757 is a deficient number, since it is larger than the sum of its proper divisors (1).

131507313757 is an equidigital number, since it uses as much as digits as its factorization.

131507313757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 231525, while the sum is 43.

The spelling of 131507313757 in words is "one hundred thirty-one billion, five hundred seven million, three hundred thirteen thousand, seven hundred fifty-seven".