156231 has 6 divisors (see below), whose sum is σ = 225680. Its totient is φ = 104148.

The previous prime is 156229. The next prime is 156241. The reversal of 156231 is 132651.

It is not a de Polignac number, because 156231 - 2¹ = 156229 is a prime.

It is a super-2 number, since 2×156231² = 48816250722, which contains 22 as substring.

It is a Duffinian number.

156231 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8671 + ... + 8688.

2¹⁵⁶²³¹ is an apocalyptic number.

156231 is a deficient number, since it is larger than the sum of its proper divisors (69449).

156231 is a wasteful number, since it uses less digits than its factorization.

156231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17365 (or 17362 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 156231 is about 395.2606734802. The cubic root of 156231 is about 53.8586840018.

Adding to 156231 its reverse (132651), we get a palindrome (288882).

The spelling of 156231 in words is "one hundred fifty-six thousand, two hundred thirty-one".