30231 has 6 divisors (see below), whose sum is σ = 43680. Its totient is φ = 20148.

The previous prime is 30223. The next prime is 30241. The reversal of 30231 is 13203.

It is a happy number.

It is not a de Polignac number, because 30231 - 2³ = 30223 is a prime.

It is a super-2 number, since 2×30231² = 1827826722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 3359 = 30231 / (3 + 0 + 2 + 3 + 1).

30231 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30211) 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, 1671 + ... + 1688.

It is an arithmetic number, because the mean of its divisors is an integer number (7280).

2³⁰²³¹ is an apocalyptic number.

30231 is a deficient number, since it is larger than the sum of its proper divisors (13449).

30231 is a wasteful number, since it uses less digits than its factorization.

30231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3365 (or 3362 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 30231 is about 173.8706415701. The cubic root of 30231 is about 31.1518735341.

Adding to 30231 its reverse (13203), we get a palindrome (43434).

It can be divided in two parts, 302 and 31, that added together give a palindrome (333).

The spelling of 30231 in words is "thirty thousand, two hundred thirty-one".