23321143 has 2 divisors, whose sum is σ = 23321144. Its totient is φ = 23321142.

The previous prime is 23321141. The next prime is 23321147. The reversal of 23321143 is 34112332.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23321143 - 2¹ = 23321141 is a prime.

Together with 23321141, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 23321143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23321141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11660571 + 11660572.

It is an arithmetic number, because the mean of its divisors is an integer number (11660572).

Almost surely, 2^23321143 is an apocalyptic number.

23321143 is a deficient number, since it is larger than the sum of its proper divisors (1).

23321143 is an equidigital number, since it uses as much as digits as its factorization.

23321143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 19.

The square root of 23321143 is about 4829.1969311677. The cubic root of 23321143 is about 285.7041907028.

Adding to 23321143 its reverse (34112332), we get a palindrome (57433475).

The spelling of 23321143 in words is "twenty-three million, three hundred twenty-one thousand, one hundred forty-three".