20331110203 has 4 divisors (see below), whose sum is σ = 21527057880. Its totient is φ = 19135162528.

The previous prime is 20331110197. The next prime is 20331110263. The reversal of 20331110203 is 30201113302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30201113302 = 2 ⋅15100556651.

It is a cyclic number.

It is not a de Polignac number, because 20331110203 - 2⁵ = 20331110171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20331110263) 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, 597973813 + ... + 597973846.

It is an arithmetic number, because the mean of its divisors is an integer number (5381764470).

Almost surely, 2^20331110203 is an apocalyptic number.

20331110203 is a deficient number, since it is larger than the sum of its proper divisors (1195947677).

20331110203 is a wasteful number, since it uses less digits than its factorization.

20331110203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195947676.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20331110203 its reverse (30201113302), we get a palindrome (50532223505).

The spelling of 20331110203 in words is "twenty billion, three hundred thirty-one million, one hundred ten thousand, two hundred three".