30121233 has 8 divisors (see below), whose sum is σ = 40305696. Its totient is φ = 20008800.

The previous prime is 30121207. The next prime is 30121241. The reversal of 30121233 is 33212103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30121233 - 2²⁰ = 29072657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30171233) 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 7 ways as a sum of consecutive naturals, for example, 17023 + ... + 18708.

It is an arithmetic number, because the mean of its divisors is an integer number (5038212).

Almost surely, 2^30121233 is an apocalyptic number.

It is an amenable number.

30121233 is a deficient number, since it is larger than the sum of its proper divisors (10184463).

30121233 is a wasteful number, since it uses less digits than its factorization.

30121233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36015.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 30121233 is about 5488.2814250000. The cubic root of 30121233 is about 311.1412426268.

Adding to 30121233 its reverse (33212103), we get a palindrome (63333336).

The spelling of 30121233 in words is "thirty million, one hundred twenty-one thousand, two hundred thirty-three".