159823 has 4 divisors (see below), whose sum is σ = 160888. Its totient is φ = 158760.

The previous prime is 159811. The next prime is 159833. The reversal of 159823 is 328951.

159823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 328951 = 7 ⋅46993.

It is a cyclic number.

It is not a de Polignac number, because 159823 - 2⁵ = 159791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 159791 and 159800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261 + ... + 622.

It is an arithmetic number, because the mean of its divisors is an integer number (40222).

2¹⁵⁹⁸²³ is an apocalyptic number.

159823 is a deficient number, since it is larger than the sum of its proper divisors (1065).

159823 is an equidigital number, since it uses as much as digits as its factorization.

159823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064.

The product of its digits is 2160, while the sum is 28.

The square root of 159823 is about 399.7786887767. The cubic root of 159823 is about 54.2683261155.

The spelling of 159823 in words is "one hundred fifty-nine thousand, eight hundred twenty-three".