2812321 has 8 divisors (see below), whose sum is σ = 2885120. Its totient is φ = 2740608.

The previous prime is 2812319. The next prime is 2812331. The reversal of 2812321 is 1232182.

2812321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2812321 - 2¹ = 2812319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2812301) 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 7 ways as a sum of consecutive naturals, for example, 7480 + ... + 7846.

It is an arithmetic number, because the mean of its divisors is an integer number (360640).

2^2812321 is an apocalyptic number.

It is an amenable number.

2812321 is a deficient number, since it is larger than the sum of its proper divisors (72799).

2812321 is an equidigital number, since it uses as much as digits as its factorization.

2812321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543.

The product of its digits is 192, while the sum is 19.

The square root of 2812321 is about 1676.9976147866. The cubic root of 2812321 is about 141.1524096829.

The spelling of 2812321 in words is "two million, eight hundred twelve thousand, three hundred twenty-one".