344408213 has 2 divisors, whose sum is σ = 344408214. Its totient is φ = 344408212.

The previous prime is 344408203. The next prime is 344408237. The reversal of 344408213 is 312804443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 334816804 + 9591409 = 18298^2 + 3097^2 .

It is a cyclic number.

It is not a de Polignac number, because 344408213 - 2²⁴ = 327630997 is a prime.

It is a Chen prime.

It is equal to p_18519320 and since 344408213 and 18519320 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344408203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172204106 + 172204107.

It is an arithmetic number, because the mean of its divisors is an integer number (172204107).

Almost surely, 2^344408213 is an apocalyptic number.

It is an amenable number.

344408213 is a deficient number, since it is larger than the sum of its proper divisors (1).

344408213 is an equidigital number, since it uses as much as digits as its factorization.

344408213 is an odious number, because the sum of its binary digits is odd.

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

The square root of 344408213 is about 18558.2384131684. The cubic root of 344408213 is about 700.9566600054.

The spelling of 344408213 in words is "three hundred forty-four million, four hundred eight thousand, two hundred thirteen".