30031212 has 24 divisors (see below), whose sum is σ = 70214256. Its totient is φ = 9990208.

The previous prime is 30031207. The next prime is 30031217. The reversal of 30031212 is 21213003.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30031207) and next prime (30031217).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (30031217) 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, 4438 + ... + 8930.

It is an arithmetic number, because the mean of its divisors is an integer number (2925594).

Almost surely, 2^30031212 is an apocalyptic number.

It is an amenable number.

30031212 is an abundant number, since it is smaller than the sum of its proper divisors (40183044).

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

30031212 is a wasteful number, since it uses less digits than its factorization.

30031212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5057 (or 5055 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 30031212 is about 5480.0740870904. The cubic root of 30031212 is about 310.8309720695.

Adding to 30031212 its reverse (21213003), we get a palindrome (51244215).

It can be divided in two parts, 300 and 31212, that multiplied together give a square (9363600 = 3060²).

The spelling of 30031212 in words is "thirty million, thirty-one thousand, two hundred twelve".