231044436864 has 96 divisors (see below), whose sum is σ = 666771594840. Its totient is φ = 76792734720.

The previous prime is 231044436853. The next prime is 231044436871. The reversal of 231044436864 is 468634440132.

231044436864 is a `hidden beast` number, since 23 + 104 + 443 + 6 + 86 + 4 = 666.

231044436864 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 110754 + ... + 688734.

Almost surely, 2^231044436864 is an apocalyptic number.

231044436864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231044436864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333385797420).

231044436864 is an abundant number, since it is smaller than the sum of its proper divisors (435727157976).

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

231044436864 is a wasteful number, since it uses less digits than its factorization.

231044436864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578348 (or 578333 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 45.

Adding to 231044436864 its reverse (468634440132), we get a palindrome (699678876996).

The spelling of 231044436864 in words is "two hundred thirty-one billion, forty-four million, four hundred thirty-six thousand, eight hundred sixty-four".