304431225 has 24 divisors (see below), whose sum is σ = 575231040. Its totient is φ = 139168320.

The previous prime is 304431221. The next prime is 304431233. The reversal of 304431225 is 522134403.

It is not a de Polignac number, because 304431225 - 2² = 304431221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 304431195 and 304431204.

It is not an unprimeable number, because it can be changed into a prime (304431221) 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 23 ways as a sum of consecutive naturals, for example, 289410 + ... + 290459.

It is an arithmetic number, because the mean of its divisors is an integer number (23967960).

Almost surely, 2^304431225 is an apocalyptic number.

304431225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

304431225 is a deficient number, since it is larger than the sum of its proper divisors (270799815).

304431225 is a wasteful number, since it uses less digits than its factorization.

304431225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579889 (or 579884 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 304431225 is about 17447.9576168674. The cubic root of 304431225 is about 672.7128626941.

Adding to 304431225 its reverse (522134403), we get a palindrome (826565628).

The spelling of 304431225 in words is "three hundred four million, four hundred thirty-one thousand, two hundred twenty-five".