20311203210003 has 12 divisors (see below), whose sum is σ = 29740300591560. Its totient is φ = 13355311699296.

The previous prime is 20311203209933. The next prime is 20311203210013. The reversal of 20311203210003 is 30001230211302.

It is not a de Polignac number, because 20311203210003 - 2²⁵ = 20311169655571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20311203210013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15457536033 + ... + 15457537346.

It is an arithmetic number, because the mean of its divisors is an integer number (2478358382630).

Almost surely, 2^{20311203210003} is an apocalyptic number.

20311203210003 is a deficient number, since it is larger than the sum of its proper divisors (9429097381557).

20311203210003 is a wasteful number, since it uses less digits than its factorization.

20311203210003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30915073458 (or 30915073455 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20311203210003 its reverse (30001230211302), we get a palindrome (50312433421305).

The spelling of 20311203210003 in words is "twenty trillion, three hundred eleven billion, two hundred three million, two hundred ten thousand, three".