23211133 has 4 divisors (see below), whose sum is σ = 25321248. Its totient is φ = 21101020.

The previous prime is 23211121. The next prime is 23211143. The reversal of 23211133 is 33111232.

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.

It is a cyclic number.

It is not a de Polignac number, because 23211133 - 2⁵ = 23211101 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 (23211143) 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, 1055041 + ... + 1055062.

It is an arithmetic number, because the mean of its divisors is an integer number (6330312).

Almost surely, 2^23211133 is an apocalyptic number.

It is an amenable number.

23211133 is a deficient number, since it is larger than the sum of its proper divisors (2110115).

23211133 is a wasteful number, since it uses less digits than its factorization.

23211133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110114.

The product of its digits is 108, while the sum is 16.

The square root of 23211133 is about 4817.7933745647. The cubic root of 23211133 is about 285.2542432203.

Adding to 23211133 its reverse (33111232), we get a palindrome (56322365).

Subtracting 23211133 from its reverse (33111232), we obtain a palindrome (9900099).

The spelling of 23211133 in words is "twenty-three million, two hundred eleven thousand, one hundred thirty-three".