23421143 has 2 divisors, whose sum is σ = 23421144. Its totient is φ = 23421142.

The previous prime is 23421137. The next prime is 23421149. The reversal of 23421143 is 34112432.

It is a balanced prime because it is at equal distance from previous prime (23421137) and next prime (23421149).

It is a cyclic number.

It is not a de Polignac number, because 23421143 - 2¹⁰ = 23420119 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23421149) 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 as a sum of consecutive naturals, namely, 11710571 + 11710572.

It is an arithmetic number, because the mean of its divisors is an integer number (11710572).

Almost surely, 2^23421143 is an apocalyptic number.

23421143 is a deficient number, since it is larger than the sum of its proper divisors (1).

23421143 is an equidigital number, since it uses as much as digits as its factorization.

23421143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 20.

The square root of 23421143 is about 4839.5395442129. The cubic root of 23421143 is about 286.1119705996. Note that the first 3 decimals are identical.

Adding to 23421143 its reverse (34112432), we get a palindrome (57533575).

The spelling of 23421143 in words is "twenty-three million, four hundred twenty-one thousand, one hundred forty-three".