243440361 has 12 divisors (see below), whose sum is σ = 351951600. Its totient is φ = 162147960.

The previous prime is 243440341. The next prime is 243440377. The reversal of 243440361 is 163044342.

243440361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243440361 - 2⁷ = 243440233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243440311) 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, 1011 + ... + 22088.

It is an arithmetic number, because the mean of its divisors is an integer number (29329300).

Almost surely, 2^243440361 is an apocalyptic number.

It is an amenable number.

243440361 is a deficient number, since it is larger than the sum of its proper divisors (108511239).

243440361 is a wasteful number, since it uses less digits than its factorization.

243440361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24276 (or 24273 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 243440361 is about 15602.5754604809. The cubic root of 243440361 is about 624.4018691525.

The spelling of 243440361 in words is "two hundred forty-three million, four hundred forty thousand, three hundred sixty-one".