203243212500 has 144 divisors (see below), whose sum is σ = 598012849728. Its totient is φ = 53717440000.

The previous prime is 203243212451. The next prime is 203243212517. The reversal of 203243212500 is 5212342302.

203243212500 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4213519 + ... + 4261481.

It is an arithmetic number, because the mean of its divisors is an integer number (4152867012).

Almost surely, 2^203243212500 is an apocalyptic number.

203243212500 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 203243212500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299006424864).

203243212500 is an abundant number, since it is smaller than the sum of its proper divisors (394769637228).

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

203243212500 is a wasteful number, since it uses less digits than its factorization.

203243212500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48108 (or 48086 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 203243212500 its reverse (5212342302), we get a palindrome (208455554802).

The spelling of 203243212500 in words is "two hundred three billion, two hundred forty-three million, two hundred twelve thousand, five hundred".