243053243 has 4 divisors (see below), whose sum is σ = 248705688. Its totient is φ = 237400800.

The previous prime is 243053231. The next prime is 243053257. The reversal of 243053243 is 342350342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243053243 - 2⁶ = 243053179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243053203) 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, 2826158 + ... + 2826243.

It is an arithmetic number, because the mean of its divisors is an integer number (62176422).

Almost surely, 2^243053243 is an apocalyptic number.

243053243 is a deficient number, since it is larger than the sum of its proper divisors (5652445).

243053243 is an equidigital number, since it uses as much as digits as its factorization.

243053243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5652444.

The product of its (nonzero) digits is 8640, while the sum is 26.

The square root of 243053243 is about 15590.1649446053. The cubic root of 243053243 is about 624.0707196791.

The spelling of 243053243 in words is "two hundred forty-three million, fifty-three thousand, two hundred forty-three".