231143312444 has 12 divisors (see below), whose sum is σ = 441273596568. Its totient is φ = 105065142000.

The previous prime is 231143312423. The next prime is 231143312467. The reversal of 231143312444 is 444213341132.

231143312444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 231143312444.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2626628507 + ... + 2626628594.

It is an arithmetic number, because the mean of its divisors is an integer number (36772799714).

Almost surely, 2^231143312444 is an apocalyptic number.

It is an amenable number.

231143312444 is a deficient number, since it is larger than the sum of its proper divisors (210130284124).

231143312444 is a wasteful number, since it uses less digits than its factorization.

231143312444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5253257116 (or 5253257114 counting only the distinct ones).

The product of its digits is 27648, while the sum is 32.

Adding to 231143312444 its reverse (444213341132), we get a palindrome (675356653576).

The spelling of 231143312444 in words is "two hundred thirty-one billion, one hundred forty-three million, three hundred twelve thousand, four hundred forty-four".