823315 has 4 divisors (see below), whose sum is σ = 987984. Its totient is φ = 658648.

The previous prime is 823309. The next prime is 823337. The reversal of 823315 is 513328.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 823315 - 2⁵ = 823283 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82327 + ... + 82336.

It is an arithmetic number, because the mean of its divisors is an integer number (246996).

2⁸²³³¹⁵ is an apocalyptic number.

823315 is a deficient number, since it is larger than the sum of its proper divisors (164669).

823315 is a wasteful number, since it uses less digits than its factorization.

823315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164668.

The product of its digits is 720, while the sum is 22.

The square root of 823315 is about 907.3670701541. The cubic root of 823315 is about 93.7249770254.

The spelling of 823315 in words is "eight hundred twenty-three thousand, three hundred fifteen".