23211233 has 2 divisors, whose sum is σ = 23211234. Its totient is φ = 23211232.

The previous prime is 23211229. The next prime is 23211257. The reversal of 23211233 is 33211232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23203489 + 7744 = 4817^2 + 88^2 .

It is a cyclic number.

It is not a de Polignac number, because 23211233 - 2² = 23211229 is a prime.

It is a super-2 number, since 2×23211233² = 1077522674760578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23219233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605616 + 11605617.

It is an arithmetic number, because the mean of its divisors is an integer number (11605617).

Almost surely, 2^23211233 is an apocalyptic number.

It is an amenable number.

23211233 is a deficient number, since it is larger than the sum of its proper divisors (1).

23211233 is an equidigital number, since it uses as much as digits as its factorization.

23211233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 17.

The square root of 23211233 is about 4817.8037527488. The cubic root of 23211233 is about 285.2546528711.

Adding to 23211233 its reverse (33211232), we get a palindrome (56422465).

Subtracting 23211233 from its reverse (33211232), we obtain a palindrome (9999999).

The spelling of 23211233 in words is "twenty-three million, two hundred eleven thousand, two hundred thirty-three".