30331212 has 24 divisors (see below), whose sum is σ = 71425200. Its totient is φ = 10017216.

The previous prime is 30331207. The next prime is 30331243. The reversal of 30331212 is 21213303.

It is a junction number, because it is equal to n+sod(n) for n = 30331191 and 30331200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10287 + ... + 12902.

It is an arithmetic number, because the mean of its divisors is an integer number (2976050).

Almost surely, 2^30331212 is an apocalyptic number.

It is an amenable number.

30331212 is an abundant number, since it is smaller than the sum of its proper divisors (41093988).

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

30331212 is a wasteful number, since it uses less digits than its factorization.

30331212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23305 (or 23303 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 30331212 is about 5507.3779605181. The cubic root of 30331212 is about 311.8625709669.

Adding to 30331212 its reverse (21213303), we get a palindrome (51544515).

The spelling of 30331212 in words is "thirty million, three hundred thirty-one thousand, two hundred twelve".