1109311120 has 20 divisors (see below), whose sum is σ = 2579148540. Its totient is φ = 443724416.

The previous prime is 1109311117. The next prime is 1109311121. The reversal of 1109311120 is 211139011.

It can be written as a sum of positive squares in 2 ways, for example, as 596922624 + 512388496 = 24432^2 + 22636^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1109311121) 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, 6933115 + ... + 6933274.

It is an arithmetic number, because the mean of its divisors is an integer number (128957427).

Almost surely, 2^1109311120 is an apocalyptic number.

1109311120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1109311120 is an abundant number, since it is smaller than the sum of its proper divisors (1469837420).

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

1109311120 is a wasteful number, since it uses less digits than its factorization.

1109311120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13866402 (or 13866396 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 1109311120 is about 33306.3225229085. The cubic root of 1109311120 is about 1035.1845672701.

The spelling of 1109311120 in words is "one billion, one hundred nine million, three hundred eleven thousand, one hundred twenty".