20043003 has 4 divisors (see below), whose sum is σ = 26724008. Its totient is φ = 13362000.

The previous prime is 20042999. The next prime is 20043007. The reversal of 20043003 is 30034002.

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

It is an interprime number because it is at equal distance from previous prime (20042999) and next prime (20043007).

It is not a de Polignac number, because 20043003 - 2² = 20042999 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 20043003.

It is not an unprimeable number, because it can be changed into a prime (20043007) 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, 3340498 + ... + 3340503.

It is an arithmetic number, because the mean of its divisors is an integer number (6681002).

Almost surely, 2^20043003 is an apocalyptic number.

20043003 is a deficient number, since it is larger than the sum of its proper divisors (6681005).

20043003 is an equidigital number, since it uses as much as digits as its factorization.

20043003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6681004.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 20043003 is about 4476.9412549195. The cubic root of 20043003 is about 271.6361692255.

Adding to 20043003 its reverse (30034002), we get a palindrome (50077005).

Subtracting 20043003 from its reverse (30034002), we obtain a palindrome (9990999).

The spelling of 20043003 in words is "twenty million, forty-three thousand, three".