344405313 has 24 divisors (see below), whose sum is σ = 576338048. Its totient is φ = 194104512.

The previous prime is 344405293. The next prime is 344405317. The reversal of 344405313 is 313504443.

344405313 is a `hidden beast` number, since 344 + 4 + 0 + 5 + 313 = 666.

It is not a de Polignac number, because 344405313 - 2⁶ = 344405249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344405317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32845 + ... + 42042.

Almost surely, 2^344405313 is an apocalyptic number.

It is an amenable number.

344405313 is a deficient number, since it is larger than the sum of its proper divisors (231932735).

344405313 is a wasteful number, since it uses less digits than its factorization.

344405313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74973 (or 74970 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 344405313 is about 18558.1602805882. The cubic root of 344405313 is about 700.9546925920.

Adding to 344405313 its reverse (313504443), we get a palindrome (657909756).

The spelling of 344405313 in words is "three hundred forty-four million, four hundred five thousand, three hundred thirteen".