30333213 has 6 divisors (see below), whose sum is σ = 43814654. Its totient is φ = 20222136.

The previous prime is 30333211. The next prime is 30333227. The reversal of 30333213 is 31233303.

It can be written as a sum of positive squares in only one way, i.e., 29127609 + 1205604 = 5397^2 + 1098^2 .

It is not a de Polignac number, because 30333213 - 2¹ = 30333211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30333211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1685170 + ... + 1685187.

Almost surely, 2^30333213 is an apocalyptic number.

It is an amenable number.

30333213 is a deficient number, since it is larger than the sum of its proper divisors (13481441).

30333213 is a wasteful number, since it uses less digits than its factorization.

30333213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370363 (or 3370360 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 18.

The square root of 30333213 is about 5507.5596229183. The cubic root of 30333213 is about 311.8694288452.

Adding to 30333213 its reverse (31233303), we get a palindrome (61566516).

The spelling of 30333213 in words is "thirty million, three hundred thirty-three thousand, two hundred thirteen".