30231212 has 12 divisors (see below), whose sum is σ = 57714216. Its totient is φ = 13741440.

The previous prime is 30231209. The next prime is 30231239. The reversal of 30231212 is 21213203.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 343493 + ... + 343580.

It is an arithmetic number, because the mean of its divisors is an integer number (4809518).

Almost surely, 2^30231212 is an apocalyptic number.

It is an amenable number.

30231212 is a deficient number, since it is larger than the sum of its proper divisors (27483004).

30231212 is a wasteful number, since it uses less digits than its factorization.

30231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687088 (or 687086 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 30231212 is about 5498.2917347118. The cubic root of 30231212 is about 311.5194635322.

Adding to 30231212 its reverse (21213203), we get a palindrome (51444415).

Subtracting from 30231212 its reverse (21213203), we obtain a square (9018009 = 3003²).

The spelling of 30231212 in words is "thirty million, two hundred thirty-one thousand, two hundred twelve".