11103311320 has 128 divisors (see below), whose sum is σ = 27109002240. Its totient is φ = 4077199360.

The previous prime is 11103311309. The next prime is 11103311321. The reversal of 11103311320 is 2311330111.

It is a junction number, because it is equal to n+sod(n) for n = 11103311294 and 11103311303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11103311321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6882834 + ... + 6884446.

It is an arithmetic number, because the mean of its divisors is an integer number (211789080).

Almost surely, 2^11103311320 is an apocalyptic number.

11103311320 is a gapful number since it is divisible by the number (10) 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 11103311320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13554501120).

11103311320 is an abundant number, since it is smaller than the sum of its proper divisors (16005690920).

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

11103311320 is a wasteful number, since it uses less digits than its factorization.

11103311320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885 (or 1881 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 11103311320 its reverse (2311330111), we get a palindrome (13414641431).

The spelling of 11103311320 in words is "eleven billion, one hundred three million, three hundred eleven thousand, three hundred twenty".