305531212 has 12 divisors (see below), whose sum is σ = 611062480. Its totient is φ = 130941936.

The previous prime is 305531203. The next prime is 305531227. The reversal of 305531212 is 212135503.

305531212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

305531212 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5455887 + ... + 5455942.

Almost surely, 2^305531212 is an apocalyptic number.

It is an amenable number.

305531212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

305531212 is a wasteful number, since it uses less digits than its factorization.

305531212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10911840 (or 10911838 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 305531212 is about 17479.4511355477. The cubic root of 305531212 is about 673.5221160255.

Adding to 305531212 its reverse (212135503), we get a palindrome (517666715).

The spelling of 305531212 in words is "three hundred five million, five hundred thirty-one thousand, two hundred twelve".