243339071 has 4 divisors (see below), whose sum is σ = 257653152. Its totient is φ = 229024992.

The previous prime is 243339053. The next prime is 243339077. The reversal of 243339071 is 170933342.

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 243339071 - 2⁶ = 243339007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243339077) 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, 7157015 + ... + 7157048.

It is an arithmetic number, because the mean of its divisors is an integer number (64413288).

Almost surely, 2^243339071 is an apocalyptic number.

243339071 is a deficient number, since it is larger than the sum of its proper divisors (14314081).

243339071 is a wasteful number, since it uses less digits than its factorization.

243339071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14314080.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 243339071 is about 15599.3291842951. The cubic root of 243339071 is about 624.3152573313.

The spelling of 243339071 in words is "two hundred forty-three million, three hundred thirty-nine thousand, seventy-one".