20023312003 has 4 divisors (see below), whose sum is σ = 20027034360. Its totient is φ = 20019589648.

The previous prime is 20023311991. The next prime is 20023312007. The reversal of 20023312003 is 30021332002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20023312003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20023312007) 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, 1853098 + ... + 1863871.

It is an arithmetic number, because the mean of its divisors is an integer number (5006758590).

Almost surely, 2^20023312003 is an apocalyptic number.

20023312003 is a deficient number, since it is larger than the sum of its proper divisors (3722357).

20023312003 is an equidigital number, since it uses as much as digits as its factorization.

20023312003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3722356.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20023312003 its reverse (30021332002), we get a palindrome (50044644005).

The spelling of 20023312003 in words is "twenty billion, twenty-three million, three hundred twelve thousand, three".