243320353323 has 4 divisors (see below), whose sum is σ = 324427137768. Its totient is φ = 162213568880.

The previous prime is 243320353313. The next prime is 243320353343. The reversal of 243320353323 is 323353023342.

243320353323 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 243320353323 - 2⁹ = 243320352811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243320353313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40553392218 + ... + 40553392223.

It is an arithmetic number, because the mean of its divisors is an integer number (81106784442).

Almost surely, 2^243320353323 is an apocalyptic number.

243320353323 is a deficient number, since it is larger than the sum of its proper divisors (81106784445).

243320353323 is an equidigital number, since it uses as much as digits as its factorization.

243320353323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81106784444.

The product of its (nonzero) digits is 116640, while the sum is 33.

Adding to 243320353323 its reverse (323353023342), we get a palindrome (566673376665).

The spelling of 243320353323 in words is "two hundred forty-three billion, three hundred twenty million, three hundred fifty-three thousand, three hundred twenty-three".