1103303220 has 96 divisors (see below), whose sum is σ = 3136589568. Its totient is φ = 289738752.

The previous prime is 1103303219. The next prime is 1103303233. The reversal of 1103303220 is 223033011.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1103303220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1704937 + ... + 1705583.

It is an arithmetic number, because the mean of its divisors is an integer number (32672808).

Almost surely, 2^1103303220 is an apocalyptic number.

1103303220 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 1103303220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1568294784).

1103303220 is an abundant number, since it is smaller than the sum of its proper divisors (2033286348).

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

1103303220 is a wasteful number, since it uses less digits than its factorization.

1103303220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049 (or 1047 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1103303220 is about 33216.0084898833. The cubic root of 1103303220 is about 1033.3123702534.

Adding to 1103303220 its reverse (223033011), we get a palindrome (1326336231).

The spelling of 1103303220 in words is "one billion, one hundred three million, three hundred three thousand, two hundred twenty".