1103203112 has 64 divisors (see below), whose sum is σ = 2299674240. Its totient is φ = 491948800.

The previous prime is 1103203111. The next prime is 1103203121. The reversal of 1103203112 is 2113023011.

It is not an unprimeable number, because it can be changed into a prime (1103203111) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1980338 + ... + 1980894.

It is an arithmetic number, because the mean of its divisors is an integer number (35932410).

Almost surely, 2^1103203112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1103203112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1149837120).

1103203112 is an abundant number, since it is smaller than the sum of its proper divisors (1196471128).

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

1103203112 is a wasteful number, since it uses less digits than its factorization.

1103203112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1103203112 is about 33214.5015317105. The cubic root of 1103203112 is about 1033.2811168435.

Adding to 1103203112 its reverse (2113023011), we get a palindrome (3216226123).

The spelling of 1103203112 in words is "one billion, one hundred three million, two hundred three thousand, one hundred twelve".