823312 has 20 divisors (see below), whose sum is σ = 1823296. Its totient is φ = 352800.

The previous prime is 823309. The next prime is 823337. The reversal of 823312 is 213328.

It is a happy number.

It is a nialpdrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 823312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3564 + ... + 3787.

2⁸²³³¹² is an apocalyptic number.

It is an amenable number.

823312 is an abundant number, since it is smaller than the sum of its proper divisors (999984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

823312 is a wasteful number, since it uses less digits than its factorization.

823312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7366 (or 7360 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 823312 is about 907.3654170179. The cubic root of 823312 is about 93.7248631867.

The spelling of 823312 in words is "eight hundred twenty-three thousand, three hundred twelve".