304144221 has 8 divisors (see below), whose sum is σ = 405660960. Its totient is φ = 202695152.

The previous prime is 304144189. The next prime is 304144223. The reversal of 304144221 is 122441403.

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

It is a cyclic number.

It is not a de Polignac number, because 304144221 - 2⁵ = 304144189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304144223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5286 + ... + 25223.

It is an arithmetic number, because the mean of its divisors is an integer number (50707620).

Almost surely, 2^304144221 is an apocalyptic number.

It is an amenable number.

304144221 is a deficient number, since it is larger than the sum of its proper divisors (101516739).

304144221 is a wasteful number, since it uses less digits than its factorization.

304144221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33835.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 304144221 is about 17439.7311045784. The cubic root of 304144221 is about 672.5013951317.

Adding to 304144221 its reverse (122441403), we get a palindrome (426585624).

The spelling of 304144221 in words is "three hundred four million, one hundred forty-four thousand, two hundred twenty-one".