2843281 has 4 divisors (see below), whose sum is σ = 3249472. Its totient is φ = 2437092.

The previous prime is 2843273. The next prime is 2843287. The reversal of 2843281 is 1823482.

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 not a de Polignac number, because 2843281 - 2³ = 2843273 is a prime.

It is a super-2 number, since 2×2843281² = 16168493689922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2843287) 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, 203085 + ... + 203098.

It is an arithmetic number, because the mean of its divisors is an integer number (812368).

2^2843281 is an apocalyptic number.

It is an amenable number.

2843281 is a deficient number, since it is larger than the sum of its proper divisors (406191).

2843281 is an equidigital number, since it uses as much as digits as its factorization.

2843281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406190.

The product of its digits is 3072, while the sum is 28.

The square root of 2843281 is about 1686.2031312982. The cubic root of 2843281 is about 141.6684887117.

The spelling of 2843281 in words is "two million, eight hundred forty-three thousand, two hundred eighty-one".