2813213 has 4 divisors (see below), whose sum is σ = 3029628. Its totient is φ = 2596800.

The previous prime is 2813207. The next prime is 2813227. The reversal of 2813213 is 3123182.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1036324 + 1776889 = 1018^2 + 1333^2 .

It is a cyclic number.

It is not a de Polignac number, because 2813213 - 2⁶ = 2813149 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2813413) 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 3 ways as a sum of consecutive naturals, for example, 108188 + ... + 108213.

It is an arithmetic number, because the mean of its divisors is an integer number (757407).

2^2813213 is an apocalyptic number.

It is an amenable number.

2813213 is a deficient number, since it is larger than the sum of its proper divisors (216415).

2813213 is a wasteful number, since it uses less digits than its factorization.

2813213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216414.

The product of its digits is 288, while the sum is 20.

The square root of 2813213 is about 1677.2635451830. The cubic root of 2813213 is about 141.1673314788.

Adding to 2813213 its reverse (3123182), we get a palindrome (5936395).

The spelling of 2813213 in words is "two million, eight hundred thirteen thousand, two hundred thirteen".