823271 has 2 divisors, whose sum is σ = 823272. Its totient is φ = 823270.

The previous prime is 823261. The next prime is 823283. The reversal of 823271 is 172328.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-823271 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (823201) 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 as a sum of consecutive naturals, namely, 411635 + 411636.

It is an arithmetic number, because the mean of its divisors is an integer number (411636).

2⁸²³²⁷¹ is an apocalyptic number.

823271 is a deficient number, since it is larger than the sum of its proper divisors (1).

823271 is an equidigital number, since it uses as much as digits as its factorization.

823271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 23.

The square root of 823271 is about 907.3428238544. The cubic root of 823271 is about 93.7233073637.

Adding to 823271 its reverse (172328), we get a palindrome (995599).

It can be divided in two parts, 82327 and 1, that added together give a palindrome (82328).

The spelling of 823271 in words is "eight hundred twenty-three thousand, two hundred seventy-one".