243363361 has 4 divisors (see below), whose sum is σ = 251213824. Its totient is φ = 235512900.

The previous prime is 243363349. The next prime is 243363403. The reversal of 243363361 is 163363342.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243363361 - 2⁷ = 243363233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 7850431 = 243363361 / (2 + 4 + 3 + 3 + 6 + 3 + 3 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243363301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3925185 + ... + 3925246.

It is an arithmetic number, because the mean of its divisors is an integer number (62803456).

Almost surely, 2^243363361 is an apocalyptic number.

It is an amenable number.

243363361 is a deficient number, since it is larger than the sum of its proper divisors (7850463).

243363361 is an equidigital number, since it uses as much as digits as its factorization.

243363361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7850462.

The product of its digits is 23328, while the sum is 31.

The square root of 243363361 is about 15600.1077239870. The cubic root of 243363361 is about 624.3360295991.

The spelling of 243363361 in words is "two hundred forty-three million, three hundred sixty-three thousand, three hundred sixty-one".