11133203031 has 20 divisors (see below), whose sum is σ = 16639484400. Its totient is φ = 7418385216.

The previous prime is 11133203009. The next prime is 11133203051. The reversal of 11133203031 is 13030233111.

It is a happy number.

It is not a de Polignac number, because 11133203031 - 2¹⁰ = 11133202007 is a prime.

It is a super-2 number, since 2×11133203031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11133202995 and 11133203013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11133203051) 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 19 ways as a sum of consecutive naturals, for example, 131455 + ... + 198863.

It is an arithmetic number, because the mean of its divisors is an integer number (831974220).

Almost surely, 2^11133203031 is an apocalyptic number.

11133203031 is a deficient number, since it is larger than the sum of its proper divisors (5506281369).

11133203031 is an equidigital number, since it uses as much as digits as its factorization.

11133203031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69460 (or 69451 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 11133203031 its reverse (13030233111), we get a palindrome (24163436142).

The spelling of 11133203031 in words is "eleven billion, one hundred thirty-three million, two hundred three thousand, thirty-one".