231232140424 has 16 divisors (see below), whose sum is σ = 447546078720. Its totient is φ = 111886519440.

The previous prime is 231232140413. The next prime is 231232140457. The reversal of 231232140424 is 424041232132.

231232140424 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 231232140392 and 231232140401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466193584 + ... + 466194079.

It is an arithmetic number, because the mean of its divisors is an integer number (27971629920).

Almost surely, 2^231232140424 is an apocalyptic number.

It is an amenable number.

231232140424 is a deficient number, since it is larger than the sum of its proper divisors (216313938296).

231232140424 is a wasteful number, since it uses less digits than its factorization.

231232140424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932387700 (or 932387696 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 231232140424 its reverse (424041232132), we get a palindrome (655273372556).

The spelling of 231232140424 in words is "two hundred thirty-one billion, two hundred thirty-two million, one hundred forty thousand, four hundred twenty-four".