11131223232 has 112 divisors (see below), whose sum is σ = 29967155712. Its totient is φ = 3645788160.

The previous prime is 11131223171. The next prime is 11131223237. The reversal of 11131223232 is 23232213111.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 11131223199 and 11131223208.

It is not an unprimeable number, because it can be changed into a prime (11131223237) 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, 4592773 + ... + 4595195.

Almost surely, 2^11131223232 is an apocalyptic number.

11131223232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11131223232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14983577856).

11131223232 is an abundant number, since it is smaller than the sum of its proper divisors (18835932480).

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

11131223232 is a wasteful number, since it uses less digits than its factorization.

11131223232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846 (or 2836 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

Adding to 11131223232 its reverse (23232213111), we get a palindrome (34363436343).

The spelling of 11131223232 in words is "eleven billion, one hundred thirty-one million, two hundred twenty-three thousand, two hundred thirty-two".