344021513 has 6 divisors (see below), whose sum is σ = 378139482. Its totient is φ = 312746720.

The previous prime is 344021387. The next prime is 344021521. The reversal of 344021513 is 315120443.

It can be written as a sum of positive squares in only one way, i.e., 282508864 + 61512649 = 16808^2 + 7843^2 .

It is a de Polignac number, because none of the positive numbers 2^k-344021513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344021593) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1421456 + ... + 1421697.

It is an arithmetic number, because the mean of its divisors is an integer number (63023247).

Almost surely, 2^344021513 is an apocalyptic number.

It is an amenable number.

344021513 is a deficient number, since it is larger than the sum of its proper divisors (34117969).

344021513 is a wasteful number, since it uses less digits than its factorization.

344021513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2843175 (or 2843164 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 344021513 is about 18547.8169335369. The cubic root of 344021513 is about 700.6942180912.

Adding to 344021513 its reverse (315120443), we get a palindrome (659141956).

The spelling of 344021513 in words is "three hundred forty-four million, twenty-one thousand, five hundred thirteen".