2821113 has 12 divisors (see below), whose sum is σ = 4091568. Its totient is φ = 1873080.

The previous prime is 2821109. The next prime is 2821141. The reversal of 2821113 is 3111282.

It is not a de Polignac number, because 2821113 - 2² = 2821109 is a prime.

It is a Curzon number.

2821113 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2821103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2506 + ... + 3452.

It is an arithmetic number, because the mean of its divisors is an integer number (340964).

2^2821113 is an apocalyptic number.

It is an amenable number.

2821113 is a deficient number, since it is larger than the sum of its proper divisors (1270455).

2821113 is a wasteful number, since it uses less digits than its factorization.

2821113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284 (or 1281 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 2821113 is about 1679.6169206102. The cubic root of 2821113 is about 141.2993489301.

Adding to 2821113 its reverse (3111282), we get a palindrome (5932395).

It can be divided in two parts, 28211 and 13, that added together give a square (28224 = 168²).

The spelling of 2821113 in words is "two million, eight hundred twenty-one thousand, one hundred thirteen".