344222381 has 2 divisors, whose sum is σ = 344222382. Its totient is φ = 344222380.

The previous prime is 344222377. The next prime is 344222383. The reversal of 344222381 is 183222443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294294025 + 49928356 = 17155^2 + 7066^2 .

It is an emirp because it is prime and its reverse (183222443) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 344222381 - 2² = 344222377 is a prime.

It is a super-2 number, since 2×344222381² = 236978095162618322, which contains 22 as substring.

Together with 344222383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344222383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172111190 + 172111191.

It is an arithmetic number, because the mean of its divisors is an integer number (172111191).

Almost surely, 2^344222381 is an apocalyptic number.

It is an amenable number.

344222381 is a deficient number, since it is larger than the sum of its proper divisors (1).

344222381 is an equidigital number, since it uses as much as digits as its factorization.

344222381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 29.

The square root of 344222381 is about 18553.2310124140. The cubic root of 344222381 is about 700.8305658258.

The spelling of 344222381 in words is "three hundred forty-four million, two hundred twenty-two thousand, three hundred eighty-one".