131919318591 has 16 divisors (see below), whose sum is σ = 179234022240. Its totient is φ = 86275837440.

The previous prime is 131919318577. The next prime is 131919318607. The reversal of 131919318591 is 195813919131.

It is a de Polignac number, because none of the positive numbers 2^k-131919318591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131919318191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1306155 + ... + 1403523.

It is an arithmetic number, because the mean of its divisors is an integer number (11202126390).

Almost surely, 2^131919318591 is an apocalyptic number.

131919318591 is a deficient number, since it is larger than the sum of its proper divisors (47314703649).

131919318591 is an equidigital number, since it uses as much as digits as its factorization.

131919318591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105946.

The product of its digits is 262440, while the sum is 51.

The spelling of 131919318591 in words is "one hundred thirty-one billion, nine hundred nineteen million, three hundred eighteen thousand, five hundred ninety-one".