11133303231 has 16 divisors (see below), whose sum is σ = 15057512960. Its totient is φ = 7315963200.

The previous prime is 11133303229. The next prime is 11133303277. The reversal of 11133303231 is 13230333111.

It is not a de Polignac number, because 11133303231 - 2¹ = 11133303229 is a prime.

It is a super-2 number, since 2×11133303231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11133303198 and 11133303207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11133303031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103356 + ... + 181518.

It is an arithmetic number, because the mean of its divisors is an integer number (941094560).

Almost surely, 2^11133303231 is an apocalyptic number.

11133303231 is a deficient number, since it is larger than the sum of its proper divisors (3924209729).

11133303231 is an equidigital number, since it uses as much as digits as its factorization.

11133303231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78846.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 11133303231 its reverse (13230333111), we get a palindrome (24363636342).

The spelling of 11133303231 in words is "eleven billion, one hundred thirty-three million, three hundred three thousand, two hundred thirty-one".