344122991 has 2 divisors, whose sum is σ = 344122992. Its totient is φ = 344122990.

The previous prime is 344122979. The next prime is 344123047. The reversal of 344122991 is 199221443.

It is a weak prime.

It is an emirp because it is prime and its reverse (199221443) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344122991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344122931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172061495 + 172061496.

It is an arithmetic number, because the mean of its divisors is an integer number (172061496).

Almost surely, 2^344122991 is an apocalyptic number.

344122991 is a deficient number, since it is larger than the sum of its proper divisors (1).

344122991 is an equidigital number, since it uses as much as digits as its factorization.

344122991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 35.

The square root of 344122991 is about 18550.5523098370. The cubic root of 344122991 is about 700.7631072497.

The spelling of 344122991 in words is "three hundred forty-four million, one hundred twenty-two thousand, nine hundred ninety-one".