344520013 has 4 divisors (see below), whose sum is σ = 359499168. Its totient is φ = 329540860.

The previous prime is 344519993. The next prime is 344520017. The reversal of 344520013 is 310025443.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 344520013 - 2¹³ = 344511821 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 (344520017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7489543 + ... + 7489588.

It is an arithmetic number, because the mean of its divisors is an integer number (89874792).

Almost surely, 2^344520013 is an apocalyptic number.

It is an amenable number.

344520013 is a deficient number, since it is larger than the sum of its proper divisors (14979155).

344520013 is a wasteful number, since it uses less digits than its factorization.

344520013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14979154.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 344520013 is about 18561.2503081016. The cubic root of 344520013 is about 701.0324987663.

Adding to 344520013 its reverse (310025443), we get a palindrome (654545456).

The spelling of 344520013 in words is "three hundred forty-four million, five hundred twenty thousand, thirteen".