231544768 has 112 divisors (see below), whose sum is σ = 573511680. Its totient is φ = 90307584.

The previous prime is 231544763. The next prime is 231544769. The reversal of 231544768 is 867445132.

231544768 is digitally balanced in base 2, 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 (112).

It is a super-2 number, since 2×231544768² = 107225959176347648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231544768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231544763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 483153 + ... + 483631.

It is an arithmetic number, because the mean of its divisors is an integer number (5120640).

Almost surely, 2^231544768 is an apocalyptic number.

231544768 is a gapful number since it is divisible by the number (28) 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 231544768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286755840).

231544768 is an abundant number, since it is smaller than the sum of its proper divisors (341966912).

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

231544768 is a wasteful number, since it uses less digits than its factorization.

231544768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 584 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The square root of 231544768 is about 15216.5951513471. The cubic root of 231544768 is about 614.0612005614.

The spelling of 231544768 in words is "two hundred thirty-one million, five hundred forty-four thousand, seven hundred sixty-eight".