2823381 has 36 divisors (see below), whose sum is σ = 4754880. Its totient is φ = 1600560.

The previous prime is 2823371. The next prime is 2823389. The reversal of 2823381 is 1833282.

2823381 is a `hidden beast` number, since 282 + 3 + 381 = 666.

2823381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2823381 - 2¹⁹ = 2299093 is a prime.

It is a super-2 number, since 2×2823381² = 15942960542322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2823389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 35700 + ... + 35778.

It is an arithmetic number, because the mean of its divisors is an integer number (132080).

2^2823381 is an apocalyptic number.

It is an amenable number.

2823381 is a deficient number, since it is larger than the sum of its proper divisors (1931499).

2823381 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (2823380) it forms an eRAP, since the sums of their prime factors are consecutive (133 and 134).

2823381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 112 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 2823381 is about 1680.2919389201. The cubic root of 2823381 is about 141.3372040938.

Subtracting from 2823381 its reverse (1833282), we obtain a palindrome (990099).

It can be divided in two parts, 282 and 3381, that added together give a palindrome (3663).

The spelling of 2823381 in words is "two million, eight hundred twenty-three thousand, three hundred eighty-one".