11123131232 has 48 divisors (see below), whose sum is σ = 22499784720. Its totient is φ = 5410848768.

The previous prime is 11123131219. The next prime is 11123131237. The reversal of 11123131232 is 23213132111.

It is a happy number.

11123131232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123131237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152768 + ... + 213504.

It is an arithmetic number, because the mean of its divisors is an integer number (468745515).

Almost surely, 2^11123131232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11123131232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11249892360).

11123131232 is an abundant number, since it is smaller than the sum of its proper divisors (11376653488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11123131232 is an equidigital number, since it uses as much as digits as its factorization.

11123131232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60903 (or 60895 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

Adding to 11123131232 its reverse (23213132111), we get a palindrome (34336263343).

The spelling of 11123131232 in words is "eleven billion, one hundred twenty-three million, one hundred thirty-one thousand, two hundred thirty-two".