180231 has 4 divisors (see below), whose sum is σ = 240312. Its totient is φ = 120152.

The previous prime is 180221. The next prime is 180233. The reversal of 180231 is 132081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132081 = 3 ⋅44027.

It is a cyclic number.

It is not a de Polignac number, because 180231 - 2⁹ = 179719 is a prime.

It is a super-2 number, since 2×180231² = 64966426722, which contains 22 as substring.

It is a D-number.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 180231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180233) 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, 30036 + ... + 30041.

It is an arithmetic number, because the mean of its divisors is an integer number (60078).

2¹⁸⁰²³¹ is an apocalyptic number.

180231 is the 269-th centered pentagonal number.

180231 is a deficient number, since it is larger than the sum of its proper divisors (60081).

180231 is an equidigital number, since it uses as much as digits as its factorization.

180231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60080.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 180231 is about 424.5362175363. The cubic root of 180231 is about 56.4863046661.

The spelling of 180231 in words is "one hundred eighty thousand, two hundred thirty-one".