11143113312 has 96 divisors (see below), whose sum is σ = 30851694720. Its totient is φ = 3511848960.

The previous prime is 11143113283. The next prime is 11143113349. The reversal of 11143113312 is 21331134111.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a congruent 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, 948112 + ... + 959792.

It is an arithmetic number, because the mean of its divisors is an integer number (321371820).

Almost surely, 2^11143113312 is an apocalyptic number.

11143113312 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 11143113312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15425847360).

11143113312 is an abundant number, since it is smaller than the sum of its proper divisors (19708581408).

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

11143113312 is a wasteful number, since it uses less digits than its factorization.

11143113312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12236 (or 12228 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

Adding to 11143113312 its reverse (21331134111), we get a palindrome (32474247423).

The spelling of 11143113312 in words is "eleven billion, one hundred forty-three million, one hundred thirteen thousand, three hundred twelve".