231224444 has 12 divisors (see below), whose sum is σ = 441428568. Its totient is φ = 105102000.

The previous prime is 231224431. The next prime is 231224449. The reversal of 231224444 is 444422132.

It is a happy number.

231224444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231224449) 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, 2627507 + ... + 2627594.

It is an arithmetic number, because the mean of its divisors is an integer number (36785714).

Almost surely, 2^231224444 is an apocalyptic number.

It is an amenable number.

231224444 is a deficient number, since it is larger than the sum of its proper divisors (210204124).

231224444 is a wasteful number, since it uses less digits than its factorization.

231224444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5255116 (or 5255114 counting only the distinct ones).

The product of its digits is 6144, while the sum is 26.

The square root of 231224444 is about 15206.0660264251. The cubic root of 231224444 is about 613.7779014005. Note that the first 3 decimals are identical.

Adding to 231224444 its reverse (444422132), we get a palindrome (675646576).

The spelling of 231224444 in words is "two hundred thirty-one million, two hundred twenty-four thousand, four hundred forty-four".