1103111100 has 216 divisors, whose sum is σ = 4255873440. Its totient is φ = 232727040.

The previous prime is 1103111083. The next prime is 1103111111. The reversal of 1103111100 is 11113011.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 75166 + ... + 88634.

Almost surely, 2^1103111100 is an apocalyptic number.

1103111100 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 1103111100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2127936720).

1103111100 is an abundant number, since it is smaller than the sum of its proper divisors (3152762340).

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

1103111100 is a wasteful number, since it uses less digits than its factorization.

1103111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13509 (or 13499 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 9.

The square root of 1103111100 is about 33213.1163849465. The cubic root of 1103111100 is about 1033.2523893123.

Adding to 1103111100 its reverse (11113011), we get a palindrome (1114224111).

The spelling of 1103111100 in words is "one billion, one hundred three million, one hundred eleven thousand, one hundred".