304513 has 16 divisors (see below), whose sum is σ = 368640. Its totient is φ = 248400.

The previous prime is 304511. The next prime is 304517. The reversal of 304513 is 315403.

It is a cyclic number.

It is not a de Polignac number, because 304513 - 2¹ = 304511 is a prime.

It is a Duffinian number.

304513 is a modest number, since divided by 513 gives 304 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6456 + ... + 6502.

It is an arithmetic number, because the mean of its divisors is an integer number (23040).

2³⁰⁴⁵¹³ is an apocalyptic number.

It is an amenable number.

304513 is a deficient number, since it is larger than the sum of its proper divisors (64127).

304513 is a wasteful number, since it uses less digits than its factorization.

304513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 304513 is about 551.8269656332. The cubic root of 304513 is about 67.2773091042.

Adding to 304513 its reverse (315403), we get a palindrome (619916).

The spelling of 304513 in words is "three hundred four thousand, five hundred thirteen".