1103203220 has 48 divisors (see below), whose sum is σ = 2655434880. Its totient is φ = 377134464.

The previous prime is 1103203201. The next prime is 1103203237. The reversal of 1103203220 is 223023011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1103203195 and 1103203204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37226 + ... + 59934.

It is an arithmetic number, because the mean of its divisors is an integer number (55321560).

Almost surely, 2^1103203220 is an apocalyptic number.

1103203220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1103203220 is an abundant number, since it is smaller than the sum of its proper divisors (1552231660).

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

1103203220 is a wasteful number, since it uses less digits than its factorization.

1103203220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23072 (or 23070 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1103203220 is about 33214.5031575064. The cubic root of 1103203220 is about 1033.2811505617.

Adding to 1103203220 its reverse (223023011), we get a palindrome (1326226231).

The spelling of 1103203220 in words is "one billion, one hundred three million, two hundred three thousand, two hundred twenty".