20023304403 has 4 divisors (see below), whose sum is σ = 26697739208. Its totient is φ = 13348869600.

The previous prime is 20023304401. The next prime is 20023304407. The reversal of 20023304403 is 30440332002.

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

It is not a de Polignac number, because 20023304403 - 2¹ = 20023304401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20023304403.

It is not an unprimeable number, because it can be changed into a prime (20023304401) 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, 3337217398 + ... + 3337217403.

It is an arithmetic number, because the mean of its divisors is an integer number (6674434802).

Almost surely, 2^20023304403 is an apocalyptic number.

20023304403 is a deficient number, since it is larger than the sum of its proper divisors (6674434805).

20023304403 is an equidigital number, since it uses as much as digits as its factorization.

20023304403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6674434804.

The product of its (nonzero) digits is 1728, while the sum is 21.

Adding to 20023304403 its reverse (30440332002), we get a palindrome (50463636405).

The spelling of 20023304403 in words is "twenty billion, twenty-three million, three hundred four thousand, four hundred three".