1103311120 has 20 divisors (see below), whose sum is σ = 2565198540. Its totient is φ = 441324416.

The previous prime is 1103311117. The next prime is 1103311129. The reversal of 1103311120 is 211133011.

It can be written as a sum of positive squares in 2 ways, for example, as 394260736 + 709050384 = 19856^2 + 26628^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 1103311120.

It is not an unprimeable number, because it can be changed into a prime (1103311129) 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, 6895615 + ... + 6895774.

It is an arithmetic number, because the mean of its divisors is an integer number (128259927).

Almost surely, 2^1103311120 is an apocalyptic number.

1103311120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1103311120 is an abundant number, since it is smaller than the sum of its proper divisors (1461887420).

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

1103311120 is a wasteful number, since it uses less digits than its factorization.

1103311120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13791402 (or 13791396 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1103311120 is about 33216.1274082335. The cubic root of 1103311120 is about 1033.3148365287.

Adding to 1103311120 its reverse (211133011), we get a palindrome (1314444131).

The spelling of 1103311120 in words is "one billion, one hundred three million, three hundred eleven thousand, one hundred twenty".