117836823 has 32 divisors (see below), whose sum is σ = 175415296. Its totient is φ = 69890688.

The previous prime is 117836779. The next prime is 117836827. The reversal of 117836823 is 328638711.

It is not a de Polignac number, because 117836823 - 2¹⁰ = 117835799 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117836827) 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 31 ways as a sum of consecutive naturals, for example, 182940 + ... + 183582.

It is an arithmetic number, because the mean of its divisors is an integer number (5481728).

Almost surely, 2^117836823 is an apocalyptic number.

117836823 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

117836823 is a deficient number, since it is larger than the sum of its proper divisors (57578473).

117836823 is a wasteful number, since it uses less digits than its factorization.

117836823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823.

The product of its digits is 48384, while the sum is 39.

The square root of 117836823 is about 10855.2670625830. The cubic root of 117836823 is about 490.2606179888.

The spelling of 117836823 in words is "one hundred seventeen million, eight hundred thirty-six thousand, eight hundred twenty-three".