23212331 has 2 divisors, whose sum is σ = 23212332. Its totient is φ = 23212330.

The previous prime is 23212297. The next prime is 23212349. The reversal of 23212331 is 13321232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23212331 - 2¹⁴ = 23195947 is a prime.

It is a super-2 number, since 2×23212331² = 1077624620907122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23212381) 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, 11606165 + 11606166.

It is an arithmetic number, because the mean of its divisors is an integer number (11606166).

Almost surely, 2^23212331 is an apocalyptic number.

23212331 is a deficient number, since it is larger than the sum of its proper divisors (1).

23212331 is an equidigital number, since it uses as much as digits as its factorization.

23212331 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 23212331 is about 4817.9177037388. The cubic root of 23212331 is about 285.2591507604.

Adding to 23212331 its reverse (13321232), we get a palindrome (36533563).

The spelling of 23212331 in words is "twenty-three million, two hundred twelve thousand, three hundred thirty-one".