2823281 has 4 divisors (see below), whose sum is σ = 2826864. Its totient is φ = 2819700.

The previous prime is 2823277. The next prime is 2823283. The reversal of 2823281 is 1823282.

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, 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 2823281 - 2² = 2823277 is a prime.

It is a super-2 number, since 2×2823281² = 15941831209922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2823281.

It is not an unprimeable number, because it can be changed into a prime (2823283) 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, 35 + ... + 2376.

It is an arithmetic number, because the mean of its divisors is an integer number (706716).

2^2823281 is an apocalyptic number.

It is an amenable number.

2823281 is a deficient number, since it is larger than the sum of its proper divisors (3583).

2823281 is a wasteful number, since it uses less digits than its factorization.

2823281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3582.

The product of its digits is 1536, while the sum is 26.

The square root of 2823281 is about 1680.2621819228. The cubic root of 2823281 is about 141.3355354222.

Subtracting from 2823281 its reverse (1823282), we obtain a palindrome (999999).

The spelling of 2823281 in words is "two million, eight hundred twenty-three thousand, two hundred eighty-one".