231218056944 has 360 divisors, whose sum is σ = 775668188880. Its totient is φ = 64078350336.

The previous prime is 231218056933. The next prime is 231218056967. The reversal of 231218056944 is 449650812132.

231218056944 is a `hidden beast` number, since 2 + 3 + 1 + 2 + 1 + 80 + 569 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 231218056944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 33279679 + ... + 33286625.

It is an arithmetic number, because the mean of its divisors is an integer number (2154633858).

Almost surely, 2^231218056944 is an apocalyptic number.

231218056944 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 231218056944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (387834094440).

231218056944 is an abundant number, since it is smaller than the sum of its proper divisors (544450131936).

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

231218056944 is a wasteful number, since it uses less digits than its factorization.

231218056944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7117 (or 7101 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 231218056944 in words is "two hundred thirty-one billion, two hundred eighteen million, fifty-six thousand, nine hundred forty-four".