131262805529 has 2 divisors, whose sum is σ = 131262805530. Its totient is φ = 131262805528.

The previous prime is 131262805511. The next prime is 131262805537. The reversal of 131262805529 is 925508262131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75557365129 + 55705440400 = 274877^2 + 236020^2 .

It is an emirp because it is prime and its reverse (925508262131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131262805529 - 2²⁴ = 131246028313 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131262805529.

It is not a weakly prime, because it can be changed into another prime (131262805549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65631402764 + 65631402765.

It is an arithmetic number, because the mean of its divisors is an integer number (65631402765).

Almost surely, 2^131262805529 is an apocalyptic number.

It is an amenable number.

131262805529 is a deficient number, since it is larger than the sum of its proper divisors (1).

131262805529 is an equidigital number, since it uses as much as digits as its factorization.

131262805529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 131262805529 in words is "one hundred thirty-one billion, two hundred sixty-two million, eight hundred five thousand, five hundred twenty-nine".