304340013 has 6 divisors (see below), whose sum is σ = 439602254. Its totient is φ = 202893336.

The previous prime is 304340011. The next prime is 304340027. The reversal of 304340013 is 310043403.

It can be written as a sum of positive squares in only one way, i.e., 187635204 + 116704809 = 13698^2 + 10803^2 .

It is not a de Polignac number, because 304340013 - 2¹ = 304340011 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 (304340011) 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, 16907770 + ... + 16907787.

Almost surely, 2^304340013 is an apocalyptic number.

It is an amenable number.

304340013 is a deficient number, since it is larger than the sum of its proper divisors (135262241).

304340013 is a wasteful number, since it uses less digits than its factorization.

304340013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33815563 (or 33815560 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 304340013 is about 17445.3435907694. The cubic root of 304340013 is about 672.6456711473.

Adding to 304340013 its reverse (310043403), we get a palindrome (614383416).

The spelling of 304340013 in words is "three hundred four million, three hundred forty thousand, thirteen".