344137121 has 2 divisors, whose sum is σ = 344137122. Its totient is φ = 344137120.

The previous prime is 344137097. The next prime is 344137141. The reversal of 344137121 is 121731443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 271887121 + 72250000 = 16489^2 + 8500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344137121 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (344137141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172068560 + 172068561.

It is an arithmetic number, because the mean of its divisors is an integer number (172068561).

Almost surely, 2^344137121 is an apocalyptic number.

It is an amenable number.

344137121 is a deficient number, since it is larger than the sum of its proper divisors (1).

344137121 is an equidigital number, since it uses as much as digits as its factorization.

344137121 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 344137121 is about 18550.9331571218. The cubic root of 344137121 is about 700.7726984399.

Adding to 344137121 its reverse (121731443), we get a palindrome (465868564).

The spelling of 344137121 in words is "three hundred forty-four million, one hundred thirty-seven thousand, one hundred twenty-one".