243091933 has 8 divisors (see below), whose sum is σ = 278567168. Its totient is φ = 207803664.

The previous prime is 243091921. The next prime is 243091939. The reversal of 243091933 is 339190342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243091933 - 2²¹ = 240994781 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 (243091939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43941 + ... + 49162.

It is an arithmetic number, because the mean of its divisors is an integer number (34820896).

Almost surely, 2^243091933 is an apocalyptic number.

It is an amenable number.

243091933 is a deficient number, since it is larger than the sum of its proper divisors (35475235).

243091933 is an equidigital number, since it uses as much as digits as its factorization.

243091933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93483.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 243091933 is about 15591.4057416257. The cubic root of 243091933 is about 624.1038317862.

The spelling of 243091933 in words is "two hundred forty-three million, ninety-one thousand, nine hundred thirty-three".