2103203100 has 144 divisors (see below), whose sum is σ = 6555274880. Its totient is φ = 518918400.

The previous prime is 2103203083. The next prime is 2103203101. The reversal of 2103203100 is 13023012.

It is a happy number.

It is a super-2 number, since 2×2103203100² = 8846926559699220000, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103203101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 240810 + ... + 249390.

Almost surely, 2^2103203100 is an apocalyptic number.

2103203100 is a gapful number since it is divisible by the number (20) 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 2103203100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3277637440).

2103203100 is an abundant number, since it is smaller than the sum of its proper divisors (4452071780).

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

2103203100 is a wasteful number, since it uses less digits than its factorization.

2103203100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8660 (or 8653 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 2103203100 is about 45860.6923192400. The cubic root of 2103203100 is about 1281.2299172740.

Adding to 2103203100 its reverse (13023012), we get a palindrome (2116226112).

The spelling of 2103203100 in words is "two billion, one hundred three million, two hundred three thousand, one hundred".