11311226136 has 48 divisors (see below), whose sum is σ = 35010939600. Its totient is φ = 3231778752.

The previous prime is 11311226111. The next prime is 11311226137. The reversal of 11311226136 is 63162211311.

It is a happy number.

11311226136 is a `hidden beast` number, since 1 + 1 + 31 + 12 + 2 + 613 + 6 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311226137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11220951 + ... + 11221958.

It is an arithmetic number, because the mean of its divisors is an integer number (729394575).

Almost surely, 2^11311226136 is an apocalyptic number.

It is an amenable number.

11311226136 is an abundant number, since it is smaller than the sum of its proper divisors (23699713464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11311226136 is a wasteful number, since it uses less digits than its factorization.

11311226136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22442928 (or 22442921 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

Adding to 11311226136 its reverse (63162211311), we get a palindrome (74473437447).

The spelling of 11311226136 in words is "eleven billion, three hundred eleven million, two hundred twenty-six thousand, one hundred thirty-six".