11243013205 has 8 divisors (see below), whose sum is σ = 13509442872. Its totient is φ = 8982525888.

The previous prime is 11243013179. The next prime is 11243013227. The reversal of 11243013205 is 50231034211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 854919121 + 10388094084 = 29239^2 + 101922^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11243013205 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1481422 + ... + 1488991.

It is an arithmetic number, because the mean of its divisors is an integer number (1688680359).

Almost surely, 2^11243013205 is an apocalyptic number.

It is an amenable number.

11243013205 is a deficient number, since it is larger than the sum of its proper divisors (2266429667).

11243013205 is an equidigital number, since it uses as much as digits as its factorization.

11243013205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971175.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 11243013205 its reverse (50231034211), we get a palindrome (61474047416).

The spelling of 11243013205 in words is "eleven billion, two hundred forty-three million, thirteen thousand, two hundred five".