304120513 has 12 divisors (see below), whose sum is σ = 318802288. Its totient is φ = 290089800.

The previous prime is 304120507. The next prime is 304120529. The reversal of 304120513 is 315021403.

It is a de Polignac number, because none of the positive numbers 2^k-304120513 is a prime.

It is a super-4 number, since 4×304120513⁴ (a number of 35 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (304120543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 288838 + ... + 289888.

Almost surely, 2^304120513 is an apocalyptic number.

It is an amenable number.

304120513 is a deficient number, since it is larger than the sum of its proper divisors (14681775).

304120513 is a wasteful number, since it uses less digits than its factorization.

304120513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644 (or 1621 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 304120513 is about 17439.0513790172. The cubic root of 304120513 is about 672.4839208807.

Adding to 304120513 its reverse (315021403), we get a palindrome (619141916).

The spelling of 304120513 in words is "three hundred four million, one hundred twenty thousand, five hundred thirteen".