111230243181 has 24 divisors (see below), whose sum is σ = 164916142560. Its totient is φ = 72215342496.

The previous prime is 111230243171. The next prime is 111230243197. The reversal of 111230243181 is 181342032111.

111230243181 is a `hidden beast` number, since 1 + 11 + 230 + 243 + 181 = 666.

It is not a de Polignac number, because 111230243181 - 2⁷ = 111230243053 is a prime.

It is a super-2 number, since 2×111230243181² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111230243141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 922030 + ... + 1035663.

It is an arithmetic number, because the mean of its divisors is an integer number (6871505940).

Almost surely, 2^111230243181 is an apocalyptic number.

It is an amenable number.

111230243181 is a deficient number, since it is larger than the sum of its proper divisors (53685899379).

111230243181 is a wasteful number, since it uses less digits than its factorization.

111230243181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957865 (or 1957862 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

Adding to 111230243181 its reverse (181342032111), we get a palindrome (292572275292).

The spelling of 111230243181 in words is "one hundred eleven billion, two hundred thirty million, two hundred forty-three thousand, one hundred eighty-one".