243443361 has 16 divisors (see below), whose sum is σ = 376500224. Its totient is φ = 137033424.

The previous prime is 243443357. The next prime is 243443377. The reversal of 243443361 is 163344342.

It is not a de Polignac number, because 243443361 - 2² = 243443357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243433361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85105 + ... + 87918.

It is an arithmetic number, because the mean of its divisors is an integer number (23531264).

Almost surely, 2^243443361 is an apocalyptic number.

243443361 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

243443361 is a deficient number, since it is larger than the sum of its proper divisors (133056863).

243443361 is a wasteful number, since it uses less digits than its factorization.

243443361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173100.

The product of its digits is 20736, while the sum is 30.

The square root of 243443361 is about 15602.6715981591. The cubic root of 243443361 is about 624.4044340488.

The spelling of 243443361 in words is "two hundred forty-three million, four hundred forty-three thousand, three hundred sixty-one".