23321443 has 2 divisors, whose sum is σ = 23321444. Its totient is φ = 23321442.

The previous prime is 23321413. The next prime is 23321449. The reversal of 23321443 is 34412332.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23321443 is a prime.

It is not a weakly prime, because it can be changed into another prime (23321449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11660721 + 11660722.

It is an arithmetic number, because the mean of its divisors is an integer number (11660722).

Almost surely, 2^23321443 is an apocalyptic number.

23321443 is a deficient number, since it is larger than the sum of its proper divisors (1).

23321443 is an equidigital number, since it uses as much as digits as its factorization.

23321443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 22.

The square root of 23321443 is about 4829.2279921329. The cubic root of 23321443 is about 285.7054157842.

Adding to 23321443 its reverse (34412332), we get a palindrome (57733775).

The spelling of 23321443 in words is "twenty-three million, three hundred twenty-one thousand, four hundred forty-three".