344000431981 has 2 divisors, whose sum is σ = 344000431982. Its totient is φ = 344000431980.

The previous prime is 344000431921. The next prime is 344000431987. The reversal of 344000431981 is 189134000443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343999845225 + 586756 = 586515^2 + 766^2 .

It is a cyclic number.

It is not a de Polignac number, because 344000431981 - 2⁹ = 344000431469 is a prime.

It is a super-2 number, since 2×344000431981² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 344000431981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344000431987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172000215990 + 172000215991.

It is an arithmetic number, because the mean of its divisors is an integer number (172000215991).

Almost surely, 2^344000431981 is an apocalyptic number.

It is an amenable number.

344000431981 is a deficient number, since it is larger than the sum of its proper divisors (1).

344000431981 is an equidigital number, since it uses as much as digits as its factorization.

344000431981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 344000431981 in words is "three hundred forty-four billion, four hundred thirty-one thousand, nine hundred eighty-one".