283281 has 4 divisors (see below), whose sum is σ = 377712. Its totient is φ = 188852.

The previous prime is 283277. The next prime is 283289. The reversal of 283281 is 182382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 283281 - 2² = 283277 is a prime.

It is a super-2 number, since 2×283281² = 160496249922, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

283281 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 283281.

It is not an unprimeable number, because it can be changed into a prime (283289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47211 + ... + 47216.

It is an arithmetic number, because the mean of its divisors is an integer number (94428).

2²⁸³²⁸¹ is an apocalyptic number.

It is an amenable number.

283281 is a deficient number, since it is larger than the sum of its proper divisors (94431).

283281 is an equidigital number, since it uses as much as digits as its factorization.

283281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94430.

The product of its digits is 768, while the sum is 24.

The square root of 283281 is about 532.2414865453. The cubic root of 283281 is about 65.6758671377.

The spelling of 283281 in words is "two hundred eighty-three thousand, two hundred eighty-one".