344000431991 has 2 divisors, whose sum is σ = 344000431992. Its totient is φ = 344000431990.

The previous prime is 344000431987. The next prime is 344000432033. The reversal of 344000431991 is 199134000443.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 344000431991 - 2² = 344000431987 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344000431921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172000215995 + 172000215996.

It is an arithmetic number, because the mean of its divisors is an integer number (172000215996).

Almost surely, 2^344000431991 is an apocalyptic number.

344000431991 is a deficient number, since it is larger than the sum of its proper divisors (1).

344000431991 is an equidigital number, since it uses as much as digits as its factorization.

344000431991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 344000431991 in words is "three hundred forty-four billion, four hundred thirty-one thousand, nine hundred ninety-one".