243112040 has 32 divisors (see below), whose sum is σ = 548225280. Its totient is φ = 97027392.

The previous prime is 243112039. The next prime is 243112043. The reversal of 243112040 is 40211342.

It is not an unprimeable number, because it can be changed into a prime (243112043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11957 + ... + 25083.

It is an arithmetic number, because the mean of its divisors is an integer number (17132040).

Almost surely, 2^243112040 is an apocalyptic number.

243112040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243112040 is an abundant number, since it is smaller than the sum of its proper divisors (305113240).

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

243112040 is a wasteful number, since it uses less digits than its factorization.

243112040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13601 (or 13597 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 243112040 is about 15592.0505386559. The cubic root of 243112040 is about 624.1210385958.

Adding to 243112040 its reverse (40211342), we get a palindrome (283323382).

The spelling of 243112040 in words is "two hundred forty-three million, one hundred twelve thousand, forty".