11305213105 has 8 divisors (see below), whose sum is σ = 13897140264. Its totient is φ = 8823580800.

The previous prime is 11305213091. The next prime is 11305213159. The reversal of 11305213105 is 50131250311.

It can be written as a sum of positive squares in 4 ways, for example, as 812079009 + 10493134096 = 28497^2 + 102436^2 .

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

It is not a de Polignac number, because 11305213105 - 2¹⁹ = 11304688817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27573486 + ... + 27573895.

It is an arithmetic number, because the mean of its divisors is an integer number (1737142533).

Almost surely, 2^11305213105 is an apocalyptic number.

It is an amenable number.

11305213105 is a deficient number, since it is larger than the sum of its proper divisors (2591927159).

11305213105 is an equidigital number, since it uses as much as digits as its factorization.

11305213105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55147427.

The product of its (nonzero) digits is 450, while the sum is 22.

Adding to 11305213105 its reverse (50131250311), we get a palindrome (61436463416).

The spelling of 11305213105 in words is "eleven billion, three hundred five million, two hundred thirteen thousand, one hundred five".