20203313203 has 4 divisors (see below), whose sum is σ = 20348660920. Its totient is φ = 20057965488.

The previous prime is 20203313201. The next prime is 20203313209. The reversal of 20203313203 is 30231330202.

It is a happy number.

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 20203313203 - 2¹ = 20203313201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20203313201) 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, 72673650 + ... + 72673927.

It is an arithmetic number, because the mean of its divisors is an integer number (5087165230).

Almost surely, 2^20203313203 is an apocalyptic number.

20203313203 is a deficient number, since it is larger than the sum of its proper divisors (145347717).

20203313203 is a wasteful number, since it uses less digits than its factorization.

20203313203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145347716.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20203313203 its reverse (30231330202), we get a palindrome (50434643405).

The spelling of 20203313203 in words is "twenty billion, two hundred three million, three hundred thirteen thousand, two hundred three".