243252311 has 4 divisors (see below), whose sum is σ = 243473952. Its totient is φ = 243030672.

The previous prime is 243252271. The next prime is 243252343. The reversal of 243252311 is 113252342.

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 243252311 - 2¹⁰ = 243251287 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 (243252011) 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, 109166 + ... + 111371.

It is an arithmetic number, because the mean of its divisors is an integer number (60868488).

Almost surely, 2^243252311 is an apocalyptic number.

243252311 is a deficient number, since it is larger than the sum of its proper divisors (221641).

243252311 is a wasteful number, since it uses less digits than its factorization.

243252311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221640.

The product of its digits is 1440, while the sum is 23.

The square root of 243252311 is about 15596.5480475649. The cubic root of 243252311 is about 624.2410508202.

The spelling of 243252311 in words is "two hundred forty-three million, two hundred fifty-two thousand, three hundred eleven".