30123212 has 24 divisors (see below), whose sum is σ = 60367104. Its totient is φ = 12884112.

The previous prime is 30123211. The next prime is 30123229. The reversal of 30123212 is 21232103.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (30123211) by changing a digit.

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, 21353 + ... + 22719.

It is an arithmetic number, because the mean of its divisors is an integer number (2515296).

Almost surely, 2^30123212 is an apocalyptic number.

It is an amenable number.

30123212 is an abundant number, since it is smaller than the sum of its proper divisors (30243892).

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

30123212 is a wasteful number, since it uses less digits than its factorization.

30123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2165 (or 2163 counting only the distinct ones).

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

The square root of 30123212 is about 5488.4617152714. The cubic root of 30123212 is about 311.1480565913.

Adding to 30123212 its reverse (21232103), we get a palindrome (51355315).

The spelling of 30123212 in words is "thirty million, one hundred twenty-three thousand, two hundred twelve".