30071212 has 24 divisors (see below), whose sum is σ = 55141632. Its totient is φ = 14322000.

The previous prime is 30071203. The next prime is 30071287. The reversal of 30071212 is 21217003.

It is a happy number.

It is a super-2 number, since 2×30071212² = 1808555582297888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28087 + ... + 29137.

It is an arithmetic number, because the mean of its divisors is an integer number (2297568).

Almost surely, 2^30071212 is an apocalyptic number.

It is an amenable number.

30071212 is a deficient number, since it is larger than the sum of its proper divisors (25070420).

30071212 is a wasteful number, since it uses less digits than its factorization.

30071212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389 (or 1387 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 30071212 is about 5483.7224583307. The cubic root of 30071212 is about 310.9689143635.

Adding to 30071212 its reverse (21217003), we get a palindrome (51288215).

The spelling of 30071212 in words is "thirty million, seventy-one thousand, two hundred twelve".