30232133 has 4 divisors (see below), whose sum is σ = 30499788. Its totient is φ = 29964480.

The previous prime is 30232121. The next prime is 30232141. The reversal of 30232133 is 33123203.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3678724 + 26553409 = 1918^2 + 5153^2 .

It is a cyclic number.

It is not a de Polignac number, because 30232133 - 2¹⁶ = 30166597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30232183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133658 + ... + 133883.

It is an arithmetic number, because the mean of its divisors is an integer number (7624947).

Almost surely, 2^30232133 is an apocalyptic number.

It is an amenable number.

30232133 is a deficient number, since it is larger than the sum of its proper divisors (267655).

30232133 is a wasteful number, since it uses less digits than its factorization.

30232133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267654.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 30232133 is about 5498.3754873599. The cubic root of 30232133 is about 311.5226270013.

Adding to 30232133 its reverse (33123203), we get a palindrome (63355336).

The spelling of 30232133 in words is "thirty million, two hundred thirty-two thousand, one hundred thirty-three".