200321243 has 4 divisors (see below), whose sum is σ = 200349720. Its totient is φ = 200292768.

The previous prime is 200321239. The next prime is 200321257. The reversal of 200321243 is 342123002.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 200321243 - 2² = 200321239 is a prime.

It is a super-3 number, since 3×200321243³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200321213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4796 + ... + 20582.

It is an arithmetic number, because the mean of its divisors is an integer number (50087430).

Almost surely, 2^200321243 is an apocalyptic number.

200321243 is a deficient number, since it is larger than the sum of its proper divisors (28477).

200321243 is a wasteful number, since it uses less digits than its factorization.

200321243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28476.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 200321243 is about 14153.4887218664. The cubic root of 200321243 is about 585.1164868965.

Adding to 200321243 its reverse (342123002), we get a palindrome (542444245).

The spelling of 200321243 in words is "two hundred million, three hundred twenty-one thousand, two hundred forty-three".