203023500500 has 96 divisors (see below), whose sum is σ = 452548736640. Its totient is φ = 79548057600.

The previous prime is 203023500499. The next prime is 203023500587. The reversal of 203023500500 is 5005320302.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 5979572 + ... + 6013428.

It is an arithmetic number, because the mean of its divisors is an integer number (4714049340).

Almost surely, 2^203023500500 is an apocalyptic number.

203023500500 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 203023500500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226274368320).

203023500500 is an abundant number, since it is smaller than the sum of its proper divisors (249525236140).

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

203023500500 is a wasteful number, since it uses less digits than its factorization.

203023500500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34122 (or 34110 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 20.

Adding to 203023500500 its reverse (5005320302), we get a palindrome (208028820802).

The spelling of 203023500500 in words is "two hundred three billion, twenty-three million, five hundred thousand, five hundred".