13231123112 has 16 divisors (see below), whose sum is σ = 24830463840. Its totient is φ = 6609666096.

The previous prime is 13231123111. The next prime is 13231123121. The reversal of 13231123112 is 21132113231.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13231123111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727388 + ... + 745355.

It is an arithmetic number, because the mean of its divisors is an integer number (1551903990).

Almost surely, 2^13231123112 is an apocalyptic number.

It is an amenable number.

13231123112 is a deficient number, since it is larger than the sum of its proper divisors (11599340728).

13231123112 is a wasteful number, since it uses less digits than its factorization.

13231123112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473872 (or 1473868 counting only the distinct ones).

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

Adding to 13231123112 its reverse (21132113231), we get a palindrome (34363236343).

The spelling of 13231123112 in words is "thirteen billion, two hundred thirty-one million, one hundred twenty-three thousand, one hundred twelve".