243310223 has 4 divisors (see below), whose sum is σ = 262026408. Its totient is φ = 224594040.

The previous prime is 243310217. The next prime is 243310337. The reversal of 243310223 is 322013342.

243310223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 243310223 - 2¹² = 243306127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243310195 and 243310204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243310213) 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, 9358073 + ... + 9358098.

It is an arithmetic number, because the mean of its divisors is an integer number (65506602).

Almost surely, 2^243310223 is an apocalyptic number.

243310223 is a deficient number, since it is larger than the sum of its proper divisors (18716185).

243310223 is a wasteful number, since it uses less digits than its factorization.

243310223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18716184.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 243310223 is about 15598.4045017431. The cubic root of 243310223 is about 624.2905853674.

Adding to 243310223 its reverse (322013342), we get a palindrome (565323565).

The spelling of 243310223 in words is "two hundred forty-three million, three hundred ten thousand, two hundred twenty-three".