243023136 has 96 divisors (see below), whose sum is σ = 664731648. Its totient is φ = 77656320.

The previous prime is 243023101. The next prime is 243023147. The reversal of 243023136 is 631320342.

243023136 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 (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377631 + ... + 378273.

It is an arithmetic number, because the mean of its divisors is an integer number (6924288).

Almost surely, 2^243023136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243023136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332365824).

243023136 is an abundant number, since it is smaller than the sum of its proper divisors (421708512).

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

243023136 is a wasteful number, since it uses less digits than its factorization.

243023136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 243023136 is about 15589.1993380032. The cubic root of 243023136 is about 624.0449507395.

Adding to 243023136 its reverse (631320342), we get a palindrome (874343478).

The spelling of 243023136 in words is "two hundred forty-three million, twenty-three thousand, one hundred thirty-six".