200281 has 4 divisors (see below), whose sum is σ = 205732.
Its totient is φ = 194832.
The previous prime is 200273. The next prime is 200293. The reversal of 200281 is 182002.
Adding to 200281 its reverse (182002), we get a palindrome (382283).
200281 = T85 + T86 + ... +
200281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 115600 + 84681 = 340^2 + 291^2
It is a cyclic number.
It is not a de Polignac number, because 200281 - 23 = 200273 is a prime.
It is a super-2 number, since 2×2002812 = 80224957922, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (200201) 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, 2670 + ... + 2743.
It is an arithmetic number, because the mean of its divisors is an integer number (51433).
2200281 is an apocalyptic number.
It is an amenable number.
200281 is a deficient number, since it is larger than the sum of its proper divisors (5451).
200281 is an equidigital number, since it uses as much as digits as its factorization.
200281 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5450.
The product of its (nonzero) digits is 32, while the sum is 13.
The square root of 200281 is about 447.5276527769.
The cubic root of 200281 is about 58.5077302469.
The spelling of 200281 in words is "two hundred thousand, two hundred eighty-one".