159231 has 4 divisors (see below), whose sum is σ = 212312. Its totient is φ = 106152.

The previous prime is 159227. The next prime is 159233. The reversal of 159231 is 132951.

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

It is not a de Polignac number, because 159231 - 2² = 159227 is a prime.

It is a super-2 number, since 2×159231² = 50709022722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 8 and base 16.

It is a junction number, because it is equal to n+sod(n) for n = 159198 and 159207.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 159231.

It is not an unprimeable number, because it can be changed into a prime (159233) 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, 26536 + ... + 26541.

It is an arithmetic number, because the mean of its divisors is an integer number (53078).

2¹⁵⁹²³¹ is an apocalyptic number.

159231 is a deficient number, since it is larger than the sum of its proper divisors (53081).

159231 is an equidigital number, since it uses as much as digits as its factorization.

159231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53080.

The product of its digits is 270, while the sum is 21.

The square root of 159231 is about 399.0375922141. The cubic root of 159231 is about 54.2012381538.

The spelling of 159231 in words is "one hundred fifty-nine thousand, two hundred thirty-one".