344313209 has 2 divisors, whose sum is σ = 344313210. Its totient is φ = 344313208.

The previous prime is 344313173. The next prime is 344313227. The reversal of 344313209 is 902313443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 342805225 + 1507984 = 18515^2 + 1228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344313209 is a prime.

It is not a weakly prime, because it can be changed into another prime (344313239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172156604 + 172156605.

It is an arithmetic number, because the mean of its divisors is an integer number (172156605).

Almost surely, 2^344313209 is an apocalyptic number.

It is an amenable number.

344313209 is a deficient number, since it is larger than the sum of its proper divisors (1).

344313209 is an equidigital number, since it uses as much as digits as its factorization.

344313209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 344313209 is about 18555.6786186871. The cubic root of 344313209 is about 700.8922017954.

The spelling of 344313209 in words is "three hundred forty-four million, three hundred thirteen thousand, two hundred nine".