823118 has 8 divisors (see below), whose sum is σ = 1299720. Its totient is φ = 389880.

The previous prime is 823117. The next prime is 823127. The reversal of 823118 is 811328.

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

It is a Curzon number.

It is a nialpdrome in base 7.

It is a zygodrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 823093 and 823102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823117) 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 3 ways as a sum of consecutive naturals, for example, 10793 + ... + 10868.

It is an arithmetic number, because the mean of its divisors is an integer number (162465).

2⁸²³¹¹⁸ is an apocalyptic number.

823118 is a deficient number, since it is larger than the sum of its proper divisors (476602).

823118 is a wasteful number, since it uses less digits than its factorization.

823118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21682.

The product of its digits is 384, while the sum is 23.

The square root of 823118 is about 907.2585078135. The cubic root of 823118 is about 93.7175010316.

The spelling of 823118 in words is "eight hundred twenty-three thousand, one hundred eighteen".