305204312 has 32 divisors (see below), whose sum is σ = 654592800. Its totient is φ = 130685184.

The previous prime is 305204311. The next prime is 305204321. The reversal of 305204312 is 213402503.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305204311) 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, 96614 + ... + 99722.

It is an arithmetic number, because the mean of its divisors is an integer number (20456025).

Almost surely, 2^305204312 is an apocalyptic number.

It is an amenable number.

305204312 is an abundant number, since it is smaller than the sum of its proper divisors (349388488).

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

305204312 is a wasteful number, since it uses less digits than its factorization.

305204312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4875 (or 4871 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 305204312 is about 17470.0976528467. The cubic root of 305204312 is about 673.2818209348.

Adding to 305204312 its reverse (213402503), we get a palindrome (518606815).

The spelling of 305204312 in words is "three hundred five million, two hundred four thousand, three hundred twelve".