13111132232 has 64 divisors (see below), whose sum is σ = 27783993600. Its totient is φ = 5745600000.

The previous prime is 13111132189. The next prime is 13111132259. The reversal of 13111132232 is 23223111131.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1913132 + ... + 1919972.

It is an arithmetic number, because the mean of its divisors is an integer number (434124900).

Almost surely, 2^13111132232 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 13111132232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13891996800).

13111132232 is an abundant number, since it is smaller than the sum of its proper divisors (14672861368).

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

13111132232 is a wasteful number, since it uses less digits than its factorization.

13111132232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7638 (or 7634 counting only the distinct ones).

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

Adding to 13111132232 its reverse (23223111131), we get a palindrome (36334243363).

The spelling of 13111132232 in words is "thirteen billion, one hundred eleven million, one hundred thirty-two thousand, two hundred thirty-two".