11005606231 has 4 divisors (see below), whose sum is σ = 11108462472. Its totient is φ = 10902749992.

The previous prime is 11005606219. The next prime is 11005606247. The reversal of 11005606231 is 13260650011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11005606231 - 2⁷ = 11005606103 is a prime.

It is a super-2 number, since 2×11005606231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11005606196 and 11005606205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11005607231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51427960 + ... + 51428173.

It is an arithmetic number, because the mean of its divisors is an integer number (2777115618).

Almost surely, 2^11005606231 is an apocalyptic number.

11005606231 is a deficient number, since it is larger than the sum of its proper divisors (102856241).

11005606231 is a wasteful number, since it uses less digits than its factorization.

11005606231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102856240.

The product of its (nonzero) digits is 1080, while the sum is 25.

The spelling of 11005606231 in words is "eleven billion, five million, six hundred six thousand, two hundred thirty-one".