131507335529 has 2 divisors, whose sum is σ = 131507335530. Its totient is φ = 131507335528.

The previous prime is 131507335501. The next prime is 131507335567. The reversal of 131507335529 is 925533705131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93484285504 + 38023050025 = 305752^2 + 194995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131507335529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131507335529.

It is not a weakly prime, because it can be changed into another prime (131507335579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65753667764 + 65753667765.

It is an arithmetic number, because the mean of its divisors is an integer number (65753667765).

Almost surely, 2^131507335529 is an apocalyptic number.

It is an amenable number.

131507335529 is a deficient number, since it is larger than the sum of its proper divisors (1).

131507335529 is an equidigital number, since it uses as much as digits as its factorization.

131507335529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 425250, while the sum is 44.

The spelling of 131507335529 in words is "one hundred thirty-one billion, five hundred seven million, three hundred thirty-five thousand, five hundred twenty-nine".