2813121 has 12 divisors (see below), whose sum is σ = 4277520. Its totient is φ = 1776600.

The previous prime is 2813117. The next prime is 2813123. The reversal of 2813121 is 1213182.

2813121 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 2813121 - 2² = 2813117 is a prime.

2813121 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2813094 and 2813103.

It is not an unprimeable number, because it can be changed into a prime (2813123) 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 11 ways as a sum of consecutive naturals, for example, 8055 + ... + 8396.

It is an arithmetic number, because the mean of its divisors is an integer number (356460).

2^2813121 is an apocalyptic number.

It is an amenable number.

2813121 is a deficient number, since it is larger than the sum of its proper divisors (1464399).

2813121 is a wasteful number, since it uses less digits than its factorization.

2813121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16476 (or 16473 counting only the distinct ones).

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

The square root of 2813121 is about 1677.2361193344. The cubic root of 2813121 is about 141.1657926054.

The spelling of 2813121 in words is "two million, eight hundred thirteen thousand, one hundred twenty-one".