231241144 has 8 divisors (see below), whose sum is σ = 433577160. Its totient is φ = 115620568.

The previous prime is 231241139. The next prime is 231241159. The reversal of 231241144 is 441142132.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14452564 + ... + 14452579.

It is an arithmetic number, because the mean of its divisors is an integer number (54197145).

Almost surely, 2^231241144 is an apocalyptic number.

It is an amenable number.

231241144 is a deficient number, since it is larger than the sum of its proper divisors (202336016).

231241144 is a wasteful number, since it uses less digits than its factorization.

231241144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28905149 (or 28905145 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 231241144 is about 15206.6151394714. The cubic root of 231241144 is about 613.7926775837.

Adding to 231241144 its reverse (441142132), we get a palindrome (672383276).

The spelling of 231241144 in words is "two hundred thirty-one million, two hundred forty-one thousand, one hundred forty-four".