219231 has 6 divisors (see below), whose sum is σ = 316680. Its totient is φ = 146148.

The previous prime is 219223. The next prime is 219251. The reversal of 219231 is 132912.

It is a happy number.

It is not a de Polignac number, because 219231 - 2³ = 219223 is a prime.

It is a super-2 number, since 2×219231² = 96124462722, which contains 22 as substring.

219231 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12171 + ... + 12188.

It is an arithmetic number, because the mean of its divisors is an integer number (52780).

2²¹⁹²³¹ is an apocalyptic number.

219231 is a deficient number, since it is larger than the sum of its proper divisors (97449).

219231 is a wasteful number, since it uses less digits than its factorization.

219231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24365 (or 24362 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 219231 is about 468.2211016176. The cubic root of 219231 is about 60.2976872623.

The spelling of 219231 in words is "two hundred nineteen thousand, two hundred thirty-one".