231234444432 has 30 divisors (see below), whose sum is σ = 647135285862. Its totient is φ = 77078148096.

The previous prime is 231234444403. The next prime is 231234444433. The reversal of 231234444432 is 234444432132.

231234444432 is a `hidden beast` number, since 23 + 123 + 44 + 44 + 432 = 666.

231234444432 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 227551896576 + 3682547856 = 477024^2 + 60684^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (231234444433) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 802897233 + ... + 802897520.

Almost surely, 2^231234444432 is an apocalyptic number.

It is an amenable number.

231234444432 is an abundant number, since it is smaller than the sum of its proper divisors (415900841430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231234444432 is a wasteful number, since it uses less digits than its factorization.

231234444432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605794767 (or 1605794758 counting only the distinct ones).

The product of its digits is 221184, while the sum is 36.

Adding to 231234444432 its reverse (234444432132), we get a palindrome (465678876564).

The spelling of 231234444432 in words is "two hundred thirty-one billion, two hundred thirty-four million, four hundred forty-four thousand, four hundred thirty-two".