44431430311391 has 2 divisors, whose sum is σ = 44431430311392. Its totient is φ = 44431430311390.

The previous prime is 44431430311283. The next prime is 44431430311423. The reversal of 44431430311391 is 19311303413444.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 44431430311391 - 2²² = 44431426117087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44431430361391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22215715155695 + 22215715155696.

It is an arithmetic number, because the mean of its divisors is an integer number (22215715155696).

Almost surely, 2^{44431430311391} is an apocalyptic number.

44431430311391 is a deficient number, since it is larger than the sum of its proper divisors (1).

44431430311391 is an equidigital number, since it uses as much as digits as its factorization.

44431430311391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 44431430311391 in words is "forty-four trillion, four hundred thirty-one billion, four hundred thirty million, three hundred eleven thousand, three hundred ninety-one".