2813321 has 4 divisors (see below), whose sum is σ = 3215232. Its totient is φ = 2411412.

The previous prime is 2813309. The next prime is 2813323. The reversal of 2813321 is 1233182.

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.

It is a cyclic number.

It is not a de Polignac number, because 2813321 - 2⁶ = 2813257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2813293 and 2813302.

It is not an unprimeable number, because it can be changed into a prime (2813323) 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, 200945 + ... + 200958.

It is an arithmetic number, because the mean of its divisors is an integer number (803808).

2^2813321 is an apocalyptic number.

It is an amenable number.

2813321 is a deficient number, since it is larger than the sum of its proper divisors (401911).

2813321 is an equidigital number, since it uses as much as digits as its factorization.

2813321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401910.

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

The square root of 2813321 is about 1677.2957401723. The cubic root of 2813321 is about 141.1691379395.

The spelling of 2813321 in words is "two million, eight hundred thirteen thousand, three hundred twenty-one".