203243004200 has 24 divisors (see below), whose sum is σ = 472539985230. Its totient is φ = 81297201600.

The previous prime is 203243004187. The next prime is 203243004247. The reversal of 203243004200 is 2400342302.

It can be written as a sum of positive squares in 3 ways, for example, as 110180180356 + 93062823844 = 331934^2 + 305062^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 508107311 + ... + 508107710.

Almost surely, 2^203243004200 is an apocalyptic number.

203243004200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203243004200 is an abundant number, since it is smaller than the sum of its proper divisors (269296981030).

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

203243004200 is a wasteful number, since it uses less digits than its factorization.

203243004200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016215037 (or 1016215028 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 203243004200 its reverse (2400342302), we get a palindrome (205643346502).

The spelling of 203243004200 in words is "two hundred three billion, two hundred forty-three million, four thousand, two hundred".