30143212 has 12 divisors (see below), whose sum is σ = 57546216. Its totient is φ = 13701440.

The previous prime is 30143207. The next prime is 30143237. The reversal of 30143212 is 21234103.

It is a happy number.

It is a super-2 number, since 2×30143212² = 1817226459353888, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342493 + ... + 342580.

It is an arithmetic number, because the mean of its divisors is an integer number (4795518).

Almost surely, 2^30143212 is an apocalyptic number.

It is an amenable number.

30143212 is a deficient number, since it is larger than the sum of its proper divisors (27403004).

30143212 is a wasteful number, since it uses less digits than its factorization.

30143212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685088 (or 685086 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 30143212 is about 5490.2834170924. The cubic root of 30143212 is about 311.2169025520.

Adding to 30143212 its reverse (21234103), we get a palindrome (51377315).

It can be divided in two parts, 3014 and 3212, that added together give a palindrome (6226).

The spelling of 30143212 in words is "thirty million, one hundred forty-three thousand, two hundred twelve".