344371309 has 4 divisors (see below), whose sum is σ = 344413404. Its totient is φ = 344329216.

The previous prime is 344371301. The next prime is 344371327. The reversal of 344371309 is 903173443.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 227255625 + 117115684 = 15075^2 + 10822^2 .

It is a cyclic number.

It is not a de Polignac number, because 344371309 - 2³ = 344371301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344371301) 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 in 3 ways as a sum of consecutive naturals, for example, 4372 + ... + 26605.

It is an arithmetic number, because the mean of its divisors is an integer number (86103351).

Almost surely, 2^344371309 is an apocalyptic number.

It is an amenable number.

344371309 is a deficient number, since it is larger than the sum of its proper divisors (42095).

344371309 is a wasteful number, since it uses less digits than its factorization.

344371309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42094.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 344371309 is about 18557.2441111281. The cubic root of 344371309 is about 700.9316228280.

The spelling of 344371309 in words is "three hundred forty-four million, three hundred seventy-one thousand, three hundred nine".