344313391 has 2 divisors, whose sum is σ = 344313392. Its totient is φ = 344313390.

The previous prime is 344313377. The next prime is 344313413. The reversal of 344313391 is 193313443.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 344313391 - 2⁹ = 344312879 is a prime.

It is a super-2 number, since 2×344313391² = 237103422443837762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344313691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172156695 + 172156696.

It is an arithmetic number, because the mean of its divisors is an integer number (172156696).

Almost surely, 2^344313391 is an apocalyptic number.

344313391 is a deficient number, since it is larger than the sum of its proper divisors (1).

344313391 is an equidigital number, since it uses as much as digits as its factorization.

344313391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 31.

The square root of 344313391 is about 18555.6835228455. The cubic root of 344313391 is about 700.8923252899.

The spelling of 344313391 in words is "three hundred forty-four million, three hundred thirteen thousand, three hundred ninety-one".