30132021233 has 4 divisors (see below), whose sum is σ = 30132377088. Its totient is φ = 30131665380.

The previous prime is 30132021211. The next prime is 30132021239. The reversal of 30132021233 is 33212023103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 33212023103 = 7 ⋅4744574729.

It is a cyclic number.

It is not a de Polignac number, because 30132021233 - 2²⁸ = 29863585777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30132021239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30368 + ... + 247358.

It is an arithmetic number, because the mean of its divisors is an integer number (7533094272).

Almost surely, 2^30132021233 is an apocalyptic number.

It is an amenable number.

30132021233 is a deficient number, since it is larger than the sum of its proper divisors (355855).

30132021233 is a wasteful number, since it uses less digits than its factorization.

30132021233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355854.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 30132021233 its reverse (33212023103), we get a palindrome (63344044336).

The spelling of 30132021233 in words is "thirty billion, one hundred thirty-two million, twenty-one thousand, two hundred thirty-three".