20203131031203 has 4 divisors (see below), whose sum is σ = 26937508041608. Its totient is φ = 13468754020800.

The previous prime is 20203131031183. The next prime is 20203131031217. The reversal of 20203131031203 is 30213013130202.

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

It is not a de Polignac number, because 20203131031203 - 2⁸ = 20203131030947 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 20203131031203.

It is not an unprimeable number, because it can be changed into a prime (20203131031243) 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, 3367188505198 + ... + 3367188505203.

It is an arithmetic number, because the mean of its divisors is an integer number (6734377010402).

Almost surely, 2^{20203131031203} is an apocalyptic number.

20203131031203 is a deficient number, since it is larger than the sum of its proper divisors (6734377010405).

20203131031203 is an equidigital number, since it uses as much as digits as its factorization.

20203131031203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6734377010404.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20203131031203 its reverse (30213013130202), we get a palindrome (50416144161405).

The spelling of 20203131031203 in words is "twenty trillion, two hundred three billion, one hundred thirty-one million, thirty-one thousand, two hundred three".