203311112100 has 36 divisors (see below), whose sum is σ = 588246818544. Its totient is φ = 54216296480.

The previous prime is 203311112089. The next prime is 203311112117. The reversal of 203311112100 is 1211113302.

It is a happy number.

203311112100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 203311112100.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 338851554 + ... + 338852153.

It is an arithmetic number, because the mean of its divisors is an integer number (16340189404).

Almost surely, 2^203311112100 is an apocalyptic number.

203311112100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203311112100 is an abundant number, since it is smaller than the sum of its proper divisors (384935706444).

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

203311112100 is a wasteful number, since it uses less digits than its factorization.

203311112100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677703724 (or 677703717 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 203311112100 its reverse (1211113302), we get a palindrome (204522225402).

The spelling of 203311112100 in words is "two hundred three billion, three hundred eleven million, one hundred twelve thousand, one hundred".