243456312 has 64 divisors (see below), whose sum is σ = 667036800. Its totient is φ = 73434240.

The previous prime is 243456281. The next prime is 243456313. The reversal of 243456312 is 213654342.

It is a self number, because there is not a number n which added to its sum of digits gives 243456312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243456313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58443 + ... + 62469.

It is an arithmetic number, because the mean of its divisors is an integer number (10422450).

Almost surely, 2^243456312 is an apocalyptic number.

243456312 is a gapful number since it is divisible by the number (22) 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 243456312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333518400).

243456312 is an abundant number, since it is smaller than the sum of its proper divisors (423580488).

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

243456312 is a wasteful number, since it uses less digits than its factorization.

243456312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4276 (or 4272 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 243456312 is about 15603.0866177177. The cubic root of 243456312 is about 624.4155064648.

The spelling of 243456312 in words is "two hundred forty-three million, four hundred fifty-six thousand, three hundred twelve".