11311010223605 has 16 divisors (see below), whose sum is σ = 14434394782320. Its totient is φ = 8479335263232.

The previous prime is 11311010223599. The next prime is 11311010223607. The reversal of 11311010223605 is 50632201011311.

It can be written as a sum of positive squares in 8 ways, for example, as 2010840277681 + 9300169945924 = 1418041^2 + 3049618^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11311010223605 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311010223607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290527934 + ... + 290566863.

It is an arithmetic number, because the mean of its divisors is an integer number (902149673895).

Almost surely, 2^{11311010223605} is an apocalyptic number.

It is an amenable number.

11311010223605 is a deficient number, since it is larger than the sum of its proper divisors (3123384558715).

11311010223605 is a wasteful number, since it uses less digits than its factorization.

11311010223605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581095048.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 11311010223605 its reverse (50632201011311), we get a palindrome (61943211234916).

The spelling of 11311010223605 in words is "eleven trillion, three hundred eleven billion, ten million, two hundred twenty-three thousand, six hundred five".