304230021 has 8 divisors (see below), whose sum is σ = 416603424. Its totient is φ = 197338320.

The previous prime is 304230007. The next prime is 304230023. The reversal of 304230021 is 120032403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 304230021 - 2¹⁰ = 304228997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304230023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1370295 + ... + 1370516.

It is an arithmetic number, because the mean of its divisors is an integer number (52075428).

Almost surely, 2^304230021 is an apocalyptic number.

It is an amenable number.

304230021 is a deficient number, since it is larger than the sum of its proper divisors (112373403).

304230021 is a wasteful number, since it uses less digits than its factorization.

304230021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740851.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 304230021 is about 17442.1908314294. The cubic root of 304230021 is about 672.5646274085.

Adding to 304230021 its reverse (120032403), we get a palindrome (424262424).

The spelling of 304230021 in words is "three hundred four million, two hundred thirty thousand, twenty-one".