243311200243 has 2 divisors, whose sum is σ = 243311200244. Its totient is φ = 243311200242.

The previous prime is 243311200241. The next prime is 243311200271. The reversal of 243311200243 is 342002113342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243311200243 - 2¹ = 243311200241 is a prime.

It is a super-4 number, since 4×243311200243⁴ (a number of 47 digits) contains 4444 as substring.

Together with 243311200241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (243311200241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121655600121 + 121655600122.

It is an arithmetic number, because the mean of its divisors is an integer number (121655600122).

Almost surely, 2^243311200243 is an apocalyptic number.

243311200243 is a deficient number, since it is larger than the sum of its proper divisors (1).

243311200243 is an equidigital number, since it uses as much as digits as its factorization.

243311200243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 243311200243 its reverse (342002113342), we get a palindrome (585313313585).

The spelling of 243311200243 in words is "two hundred forty-three billion, three hundred eleven million, two hundred thousand, two hundred forty-three".