23021423 has 2 divisors, whose sum is σ = 23021424. Its totient is φ = 23021422.

The previous prime is 23021393. The next prime is 23021431. The reversal of 23021423 is 32412032.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23021423 - 2⁶ = 23021359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23021443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11510711 + 11510712.

It is an arithmetic number, because the mean of its divisors is an integer number (11510712).

Almost surely, 2^23021423 is an apocalyptic number.

23021423 is a deficient number, since it is larger than the sum of its proper divisors (1).

23021423 is an equidigital number, since it uses as much as digits as its factorization.

23021423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 23021423 is about 4798.0645056106. The cubic root of 23021423 is about 284.4749664728.

Adding to 23021423 its reverse (32412032), we get a palindrome (55433455).

The spelling of 23021423 in words is "twenty-three million, twenty-one thousand, four hundred twenty-three".