11117055231 has 12 divisors (see below), whose sum is σ = 16154126352. Its totient is φ = 7366989696.

The previous prime is 11117055223. The next prime is 11117055263. The reversal of 11117055231 is 13255071111.

11117055231 is a `hidden beast` number, since 1 + 1 + 11 + 70 + 552 + 31 = 666.

It is not a de Polignac number, because 11117055231 - 2³ = 11117055223 is a prime.

It is a super-2 number, since 2×11117055231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11117055195 and 11117055204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11117055281) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3696786 + ... + 3699791.

It is an arithmetic number, because the mean of its divisors is an integer number (1346177196).

Almost surely, 2^11117055231 is an apocalyptic number.

11117055231 is a deficient number, since it is larger than the sum of its proper divisors (5037071121).

11117055231 is a wasteful number, since it uses less digits than its factorization.

11117055231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7396750 (or 7396747 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 27.

The spelling of 11117055231 in words is "eleven billion, one hundred seventeen million, fifty-five thousand, two hundred thirty-one".