344121137 has 2 divisors, whose sum is σ = 344121138. Its totient is φ = 344121136.

The previous prime is 344121097. The next prime is 344121139. The reversal of 344121137 is 731121443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253414561 + 90706576 = 15919^2 + 9524^2 .

It is a cyclic number.

It is not a de Polignac number, because 344121137 - 2⁶ = 344121073 is a prime.

Together with 344121139, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (344121139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172060568 + 172060569.

It is an arithmetic number, because the mean of its divisors is an integer number (172060569).

Almost surely, 2^344121137 is an apocalyptic number.

It is an amenable number.

344121137 is a deficient number, since it is larger than the sum of its proper divisors (1).

344121137 is an equidigital number, since it uses as much as digits as its factorization.

344121137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 344121137 is about 18550.5023382118. The cubic root of 344121137 is about 700.7618487683.

The spelling of 344121137 in words is "three hundred forty-four million, one hundred twenty-one thousand, one hundred thirty-seven".