243081516 has 36 divisors (see below), whose sum is σ = 598624152. Its totient is φ = 76761216.

The previous prime is 243081511. The next prime is 243081539. The reversal of 243081516 is 615180342.

243081516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (243081511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23725 + ... + 32388.

Almost surely, 2^243081516 is an apocalyptic number.

It is an amenable number.

243081516 is an abundant number, since it is smaller than the sum of its proper divisors (355542636).

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

243081516 is a wasteful number, since it uses less digits than its factorization.

243081516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56158 (or 56137 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 243081516 is about 15591.0716758021. The cubic root of 243081516 is about 624.0949169388.

The spelling of 243081516 in words is "two hundred forty-three million, eighty-one thousand, five hundred sixteen".