131444443439 has 2 divisors, whose sum is σ = 131444443440. Its totient is φ = 131444443438.

The previous prime is 131444443399. The next prime is 131444443511. The reversal of 131444443439 is 934344444131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131444443439 - 2¹⁶ = 131444377903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131444443439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131444446439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65722221719 + 65722221720.

It is an arithmetic number, because the mean of its divisors is an integer number (65722221720).

Almost surely, 2^131444443439 is an apocalyptic number.

131444443439 is a deficient number, since it is larger than the sum of its proper divisors (1).

131444443439 is an equidigital number, since it uses as much as digits as its factorization.

131444443439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 44.

The spelling of 131444443439 in words is "one hundred thirty-one billion, four hundred forty-four million, four hundred forty-three thousand, four hundred thirty-nine".