231144 has 16 divisors (see below), whose sum is σ = 577920. Its totient is φ = 77040.

The previous prime is 231131. The next prime is 231169. The reversal of 231144 is 441132.

231144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 231144.

It is an unprimeable number.

231144 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4792 + ... + 4839.

It is an arithmetic number, because the mean of its divisors is an integer number (36120).

2²³¹¹⁴⁴ is an apocalyptic number.

231144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231144 is an abundant number, since it is smaller than the sum of its proper divisors (346776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231144 is a wasteful number, since it uses less digits than its factorization.

231144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9640 (or 9636 counting only the distinct ones).

The product of its digits is 96, while the sum is 15.

The square root of 231144 is about 480.7743753571. The cubic root of 231144 is about 61.3706714468.

Adding to 231144 its reverse (441132), we get a palindrome (672276).

The spelling of 231144 in words is "two hundred thirty-one thousand, one hundred forty-four".