11810055231 has 20 divisors (see below), whose sum is σ = 18999273832. Its totient is φ = 7267725648.

The previous prime is 11810055199. The next prime is 11810055233. The reversal of 11810055231 is 13255001811.

11810055231 is a `hidden beast` number, since 1 + 1 + 8 + 100 + 552 + 3 + 1 = 666.

It is not a de Polignac number, because 11810055231 - 2⁵ = 11810055199 is a prime.

It is a super-2 number, since 2×11810055231² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11810055195 and 11810055204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11810055233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5606761 + ... + 5608866.

Almost surely, 2^11810055231 is an apocalyptic number.

11810055231 is a deficient number, since it is larger than the sum of its proper divisors (7189218601).

11810055231 is a wasteful number, since it uses less digits than its factorization.

11810055231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11215652 (or 11215643 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The spelling of 11810055231 in words is "eleven billion, eight hundred ten million, fifty-five thousand, two hundred thirty-one".