283391 has 4 divisors (see below), whose sum is σ = 288792. Its totient is φ = 277992.

The previous prime is 283369. The next prime is 283397. The reversal of 283391 is 193382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 283391 - 2¹⁸ = 21247 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 283391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (283397) 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, 2621 + ... + 2726.

It is an arithmetic number, because the mean of its divisors is an integer number (72198).

2²⁸³³⁹¹ is an apocalyptic number.

283391 is a deficient number, since it is larger than the sum of its proper divisors (5401).

283391 is an equidigital number, since it uses as much as digits as its factorization.

283391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5400.

The product of its digits is 1296, while the sum is 26.

The square root of 283391 is about 532.3448130676. The cubic root of 283391 is about 65.6843668377.

Subtracting from 283391 its reverse (193382), we obtain a palindrome (90009).

The spelling of 283391 in words is "two hundred eighty-three thousand, three hundred ninety-one".