131330305591 has 2 divisors, whose sum is σ = 131330305592. Its totient is φ = 131330305590.

The previous prime is 131330305567. The next prime is 131330305643. The reversal of 131330305591 is 195503033131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131330305591 - 2²³ = 131321916983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131330305501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65665152795 + 65665152796.

It is an arithmetic number, because the mean of its divisors is an integer number (65665152796).

Almost surely, 2^131330305591 is an apocalyptic number.

131330305591 is a deficient number, since it is larger than the sum of its proper divisors (1).

131330305591 is an equidigital number, since it uses as much as digits as its factorization.

131330305591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18225, while the sum is 34.

It can be divided in two parts, 131330 and 305591, that added together give a square (436921 = 661²).

The spelling of 131330305591 in words is "one hundred thirty-one billion, three hundred thirty million, three hundred five thousand, five hundred ninety-one".