304304221 has 16 divisors (see below), whose sum is σ = 341510400. Its totient is φ = 269212608.

The previous prime is 304304219. The next prime is 304304269. The reversal of 304304221 is 122403403.

It is a cyclic number.

It is not a de Polignac number, because 304304221 - 2¹ = 304304219 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 (304304201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49500 + ... + 55306.

It is an arithmetic number, because the mean of its divisors is an integer number (21344400).

Almost surely, 2^304304221 is an apocalyptic number.

It is an amenable number.

304304221 is a deficient number, since it is larger than the sum of its proper divisors (37206179).

304304221 is a wasteful number, since it uses less digits than its factorization.

304304221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5988.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 304304221 is about 17444.3177281314. The cubic root of 304304221 is about 672.6193012138.

Adding to 304304221 its reverse (122403403), we get a palindrome (426707624).

The spelling of 304304221 in words is "three hundred four million, three hundred four thousand, two hundred twenty-one".