2823217 has 2 divisors, whose sum is σ = 2823218. Its totient is φ = 2823216.

The previous prime is 2823203. The next prime is 2823221. The reversal of 2823217 is 7123282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2792241 + 30976 = 1671^2 + 176^2 .

It is a cyclic number.

It is not a de Polignac number, because 2823217 - 2¹⁵ = 2790449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2823191 and 2823200.

It is not a weakly prime, because it can be changed into another prime (2823277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1411608 + 1411609.

It is an arithmetic number, because the mean of its divisors is an integer number (1411609).

2^2823217 is an apocalyptic number.

It is an amenable number.

2823217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2823217 is an equidigital number, since it uses as much as digits as its factorization.

2823217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 25.

The square root of 2823217 is about 1680.2431371680. The cubic root of 2823217 is about 141.3344674516.

Adding to 2823217 its reverse (7123282), we get a palindrome (9946499).

The spelling of 2823217 in words is "two million, eight hundred twenty-three thousand, two hundred seventeen".