23121333 has 12 divisors (see below), whose sum is σ = 33964320. Its totient is φ = 15152616.

The previous prime is 23121331. The next prime is 23121341. The reversal of 23121333 is 33312132.

It is not a de Polignac number, because 23121333 - 2¹ = 23121331 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121331) 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 11 ways as a sum of consecutive naturals, for example, 21241 + ... + 22302.

It is an arithmetic number, because the mean of its divisors is an integer number (2830360).

Almost surely, 2^23121333 is an apocalyptic number.

It is an amenable number.

23121333 is a deficient number, since it is larger than the sum of its proper divisors (10842987).

23121333 is a wasteful number, since it uses less digits than its factorization.

23121333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43608 (or 43605 counting only the distinct ones).

The product of its digits is 324, while the sum is 18.

The square root of 23121333 is about 4808.4647237970. The cubic root of 23121333 is about 284.8859007717.

Adding to 23121333 its reverse (33312132), we get a palindrome (56433465).

The spelling of 23121333 in words is "twenty-three million, one hundred twenty-one thousand, three hundred thirty-three".