1113320100 has 72 divisors (see below), whose sum is σ = 3246681088. Its totient is φ = 294537600.

The previous prime is 1113320059. The next prime is 1113320101. The reversal of 1113320100 is 10233111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1113320101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23490 + ... + 52710.

Almost surely, 2^1113320100 is an apocalyptic number.

1113320100 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 1113320100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1623340544).

1113320100 is an abundant number, since it is smaller than the sum of its proper divisors (2133360988).

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

1113320100 is a wasteful number, since it uses less digits than its factorization.

1113320100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29365 (or 29358 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1113320100 is about 33366.4517142593. The cubic root of 1113320100 is about 1036.4300984966.

Adding to 1113320100 its reverse (10233111), we get a palindrome (1123553211).

The spelling of 1113320100 in words is "one billion, one hundred thirteen million, three hundred twenty thousand, one hundred".