11533311203 has 4 divisors (see below), whose sum is σ = 11543332608. Its totient is φ = 11523289800.

The previous prime is 11533311169. The next prime is 11533311221. The reversal of 11533311203 is 30211333511.

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 11533311203 - 2¹⁶ = 11533245667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11533311103) 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 3 ways as a sum of consecutive naturals, for example, 5008976 + ... + 5011277.

It is an arithmetic number, because the mean of its divisors is an integer number (2885833152).

Almost surely, 2^11533311203 is an apocalyptic number.

11533311203 is a deficient number, since it is larger than the sum of its proper divisors (10021405).

11533311203 is a wasteful number, since it uses less digits than its factorization.

11533311203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10021404.

The product of its (nonzero) digits is 810, while the sum is 23.

Adding to 11533311203 its reverse (30211333511), we get a palindrome (41744644714).

The spelling of 11533311203 in words is "eleven billion, five hundred thirty-three million, three hundred eleven thousand, two hundred three".