243011111313 has 4 divisors (see below), whose sum is σ = 324014815088. Its totient is φ = 162007407540.

The previous prime is 243011111263. The next prime is 243011111327. The reversal of 243011111313 is 313111110342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 243011111313 - 2¹⁰ = 243011110289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 243011111313.

It is not an unprimeable number, because it can be changed into a prime (243011111353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40501851883 + ... + 40501851888.

It is an arithmetic number, because the mean of its divisors is an integer number (81003703772).

Almost surely, 2^243011111313 is an apocalyptic number.

It is an amenable number.

243011111313 is a deficient number, since it is larger than the sum of its proper divisors (81003703775).

243011111313 is an equidigital number, since it uses as much as digits as its factorization.

243011111313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81003703774.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 243011111313 its reverse (313111110342), we get a palindrome (556122221655).

The spelling of 243011111313 in words is "two hundred forty-three billion, eleven million, one hundred eleven thousand, three hundred thirteen".