243291233 has 8 divisors (see below), whose sum is σ = 259633152. Its totient is φ = 227174976.

The previous prime is 243291151. The next prime is 243291239. The reversal of 243291233 is 332192342.

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 243291233 - 2⁸ = 243290977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243291196 and 243291205.

It is not an unprimeable number, because it can be changed into a prime (243291239) 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, 54185 + ... + 58502.

It is an arithmetic number, because the mean of its divisors is an integer number (32454144).

Almost surely, 2^243291233 is an apocalyptic number.

It is an amenable number.

243291233 is a deficient number, since it is larger than the sum of its proper divisors (16341919).

243291233 is a wasteful number, since it uses less digits than its factorization.

243291233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112831.

The product of its digits is 7776, while the sum is 29.

The square root of 243291233 is about 15597.7957737624. The cubic root of 243291233 is about 624.2743432952.

The spelling of 243291233 in words is "two hundred forty-three million, two hundred ninety-one thousand, two hundred thirty-three".