20203131203 has 4 divisors (see below), whose sum is σ = 20244616560. Its totient is φ = 20161645848.

The previous prime is 20203131199. The next prime is 20203131217. The reversal of 20203131203 is 30213130202.

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 20203131203 - 2² = 20203131199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20203131283) 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, 20741948 + ... + 20742921.

It is an arithmetic number, because the mean of its divisors is an integer number (5061154140).

Almost surely, 2^20203131203 is an apocalyptic number.

20203131203 is a deficient number, since it is larger than the sum of its proper divisors (41485357).

20203131203 is an equidigital number, since it uses as much as digits as its factorization.

20203131203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41485356.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20203131203 its reverse (30213130202), we get a palindrome (50416261405).

The spelling of 20203131203 in words is "twenty billion, two hundred three million, one hundred thirty-one thousand, two hundred three".