20023583 has 2 divisors, whose sum is σ = 20023584. Its totient is φ = 20023582.

The previous prime is 20023573. The next prime is 20023589. The reversal of 20023583 is 38532002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20023583 - 2⁴ = 20023567 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20023589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011791 + 10011792.

It is an arithmetic number, because the mean of its divisors is an integer number (10011792).

Almost surely, 2^20023583 is an apocalyptic number.

20023583 is a deficient number, since it is larger than the sum of its proper divisors (1).

20023583 is an equidigital number, since it uses as much as digits as its factorization.

20023583 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 20023583 is about 4474.7718377589. The cubic root of 20023583 is about 271.5484099368.

Adding to 20023583 its reverse (38532002), we get a palindrome (58555585).

The spelling of 20023583 in words is "twenty million, twenty-three thousand, five hundred eighty-three".