243311201023 has 16 divisors (see below), whose sum is σ = 269111909376. Its totient is φ = 218125103040.

The previous prime is 243311200973. The next prime is 243311201041. The reversal of 243311201023 is 320102113342.

It is a cyclic number.

It is not a de Polignac number, because 243311201023 - 2⁹ = 243311200511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243311200985 and 243311201003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243311201323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5459890 + ... + 5504272.

It is an arithmetic number, because the mean of its divisors is an integer number (16819494336).

Almost surely, 2^243311201023 is an apocalyptic number.

243311201023 is a deficient number, since it is larger than the sum of its proper divisors (25800708353).

243311201023 is a wasteful number, since it uses less digits than its factorization.

243311201023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51294.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 243311201023 its reverse (320102113342), we get a palindrome (563413314365).

The spelling of 243311201023 in words is "two hundred forty-three billion, three hundred eleven million, two hundred one thousand, twenty-three".