231330144044 has 48 divisors (see below), whose sum is σ = 430612150752. Its totient is φ = 108361285632.

The previous prime is 231330144043. The next prime is 231330144049. The reversal of 231330144044 is 440441033132.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 231330143998 and 231330144016.

It is not an unprimeable number, because it can be changed into a prime (231330144043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30526784 + ... + 30534360.

It is an arithmetic number, because the mean of its divisors is an integer number (8971086474).

Almost surely, 2^231330144044 is an apocalyptic number.

It is an amenable number.

231330144044 is a deficient number, since it is larger than the sum of its proper divisors (199282006708).

231330144044 is a wasteful number, since it uses less digits than its factorization.

231330144044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9602 (or 9600 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 231330144044 its reverse (440441033132), we get a palindrome (671771177176).

The spelling of 231330144044 in words is "two hundred thirty-one billion, three hundred thirty million, one hundred forty-four thousand, forty-four".