20424203023 has 4 divisors (see below), whose sum is σ = 23341946320. Its totient is φ = 17506459728.

The previous prime is 20424203011. The next prime is 20424203069. The reversal of 20424203023 is 32030242402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20424203023 - 2⁵ = 20424202991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20424202985 and 20424203003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424203123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1458871638 + ... + 1458871651.

It is an arithmetic number, because the mean of its divisors is an integer number (5835486580).

Almost surely, 2^20424203023 is an apocalyptic number.

20424203023 is a deficient number, since it is larger than the sum of its proper divisors (2917743297).

20424203023 is an equidigital number, since it uses as much as digits as its factorization.

20424203023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917743296.

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 20424203023 its reverse (32030242402), we get a palindrome (52454445425).

The spelling of 20424203023 in words is "twenty billion, four hundred twenty-four million, two hundred three thousand, twenty-three".