304231312 has 40 divisors (see below), whose sum is σ = 734899392. Its totient is φ = 118531200.

The previous prime is 304231297. The next prime is 304231313. The reversal of 304231312 is 213132403.

It is a self number, because there is not a number n which added to its sum of digits gives 304231312.

It is not an unprimeable number, because it can be changed into a prime (304231313) 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, 122239 + ... + 124702.

Almost surely, 2^304231312 is an apocalyptic number.

It is an amenable number.

304231312 is an abundant number, since it is smaller than the sum of its proper divisors (430668080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

304231312 is a wasteful number, since it uses less digits than its factorization.

304231312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246967 (or 246961 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 304231312 is about 17442.2278393558. The cubic root of 304231312 is about 672.5655787497.

Adding to 304231312 its reverse (213132403), we get a palindrome (517363715).

The spelling of 304231312 in words is "three hundred four million, two hundred thirty-one thousand, three hundred twelve".