20043023 has 16 divisors (see below), whose sum is σ = 26912256. Its totient is φ = 14415840.

The previous prime is 20043007. The next prime is 20043053. The reversal of 20043023 is 32034002.

It is a cyclic number.

It is not a de Polignac number, because 20043023 - 2⁴ = 20043007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20042989 and 20043007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043053) 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 in 15 ways as a sum of consecutive naturals, for example, 9011 + ... + 11012.

It is an arithmetic number, because the mean of its divisors is an integer number (1682016).

Almost surely, 2^20043023 is an apocalyptic number.

20043023 is a deficient number, since it is larger than the sum of its proper divisors (6869233).

20043023 is a wasteful number, since it uses less digits than its factorization.

20043023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20054.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 20043023 is about 4476.9434885868. The cubic root of 20043023 is about 271.6362595766.

Adding to 20043023 its reverse (32034002), we get a palindrome (52077025).

The spelling of 20043023 in words is "twenty million, forty-three thousand, twenty-three".