243311201011 has 4 divisors (see below), whose sum is σ = 243323632552. Its totient is φ = 243298769472.

The previous prime is 243311200973. The next prime is 243311201041. The reversal of 243311201011 is 110102113342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243311201011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243311201011.

It is not an unprimeable number, because it can be changed into a prime (243311201041) 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, 6186366 + ... + 6225571.

It is an arithmetic number, because the mean of its divisors is an integer number (60830908138).

Almost surely, 2^243311201011 is an apocalyptic number.

243311201011 is a deficient number, since it is larger than the sum of its proper divisors (12431541).

243311201011 is a wasteful number, since it uses less digits than its factorization.

243311201011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12431540.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 243311201011 its reverse (110102113342), we get a palindrome (353413314353).

The spelling of 243311201011 in words is "two hundred forty-three billion, three hundred eleven million, two hundred one thousand, eleven".