20231311203 has 24 divisors (see below), whose sum is σ = 29313123840. Its totient is φ = 13446019440.

The previous prime is 20231311189. The next prime is 20231311229. The reversal of 20231311203 is 30211313202.

It is not a de Polignac number, because 20231311203 - 2¹³ = 20231303011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20231311253) 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 23 ways as a sum of consecutive naturals, for example, 4404438 + ... + 4409028.

It is an arithmetic number, because the mean of its divisors is an integer number (1221380160).

Almost surely, 2^20231311203 is an apocalyptic number.

20231311203 is a deficient number, since it is larger than the sum of its proper divisors (9081812637).

20231311203 is a wasteful number, since it uses less digits than its factorization.

20231311203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5999 (or 5996 counting only the distinct ones).

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

Adding to 20231311203 its reverse (30211313202), we get a palindrome (50442624405).

The spelling of 20231311203 in words is "twenty billion, two hundred thirty-one million, three hundred eleven thousand, two hundred three".