243013040 has 160 divisors (see below), whose sum is σ = 636120000. Its totient is φ = 85929984.

The previous prime is 243013037. The next prime is 243013051. The reversal of 243013040 is 40310342.

243013040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×243013040² = 118110675220083200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1630886 + ... + 1631034.

It is an arithmetic number, because the mean of its divisors is an integer number (3975750).

Almost surely, 2^243013040 is an apocalyptic number.

243013040 is a gapful number since it is divisible by the number (20) 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 243013040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318060000).

243013040 is an abundant number, since it is smaller than the sum of its proper divisors (393106960).

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

243013040 is a wasteful number, since it uses less digits than its factorization.

243013040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 243013040 is about 15588.8755207039. The cubic root of 243013040 is about 624.0363089764.

Adding to 243013040 its reverse (40310342), we get a palindrome (283323382).

The spelling of 243013040 in words is "two hundred forty-three million, thirteen thousand, forty".