203243224100 has 108 divisors (see below), whose sum is σ = 515704625604. Its totient is φ = 69322014720.

The previous prime is 203243224061. The next prime is 203243224103. The reversal of 203243224100 is 1422342302.

It can be written as a sum of positive squares in 6 ways, for example, as 2388667876 + 200854556224 = 48874^2 + 448168^2 .

It is not an unprimeable number, because it can be changed into a prime (203243224103) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 838244 + ... + 1053156.

Almost surely, 2^203243224100 is an apocalyptic number.

203243224100 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 203243224100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257852312802).

203243224100 is an abundant number, since it is smaller than the sum of its proper divisors (312461401504).

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

203243224100 is a wasteful number, since it uses less digits than its factorization.

203243224100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215134 (or 215120 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 203243224100 its reverse (1422342302), we get a palindrome (204665566402).

The spelling of 203243224100 in words is "two hundred three billion, two hundred forty-three million, two hundred twenty-four thousand, one hundred".