304221231 has 8 divisors (see below), whose sum is σ = 450698160. Its totient is φ = 202814136.

The previous prime is 304221221. The next prime is 304221263. The reversal of 304221231 is 132122403.

It is not a de Polignac number, because 304221231 - 2⁶ = 304221167 is a prime.

It is a super-2 number, since 2×304221231² = 185101114782310722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304221221) 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, 5633700 + ... + 5633753.

It is an arithmetic number, because the mean of its divisors is an integer number (56337270).

Almost surely, 2^304221231 is an apocalyptic number.

304221231 is a deficient number, since it is larger than the sum of its proper divisors (146476929).

304221231 is a wasteful number, since it uses less digits than its factorization.

304221231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11267462 (or 11267456 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 304221231 is about 17441.9388543820. The cubic root of 304221231 is about 672.5581499631.

Adding to 304221231 its reverse (132122403), we get a palindrome (436343634).

The spelling of 304221231 in words is "three hundred four million, two hundred twenty-one thousand, two hundred thirty-one".