30503212 has 12 divisors (see below), whose sum is σ = 53909856. Its totient is φ = 15100400.

The previous prime is 30503197. The next prime is 30503251. The reversal of 30503212 is 21230503.

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, 37348 + ... + 38155.

It is an arithmetic number, because the mean of its divisors is an integer number (4492488).

Almost surely, 2^30503212 is an apocalyptic number.

It is an amenable number.

30503212 is a deficient number, since it is larger than the sum of its proper divisors (23406644).

30503212 is a wasteful number, since it uses less digits than its factorization.

30503212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75608 (or 75606 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 30503212 is about 5522.9713017542. The cubic root of 30503212 is about 312.4509559300.

Adding to 30503212 its reverse (21230503), we get a palindrome (51733715).

The spelling of 30503212 in words is "thirty million, five hundred three thousand, two hundred twelve".