111131023113 has 16 divisors (see below), whose sum is σ = 179605694400. Its totient is φ = 67352135040.

The previous prime is 111131023063. The next prime is 111131023127. The reversal of 111131023113 is 311320131111.

111131023113 is a `hidden beast` number, since 1 + 111 + 310 + 231 + 13 = 666.

It is not a de Polignac number, because 111131023113 - 2¹² = 111131019017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111131023813) 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 15 ways as a sum of consecutive naturals, for example, 187088968 + ... + 187089561.

It is an arithmetic number, because the mean of its divisors is an integer number (11225355900).

Almost surely, 2^111131023113 is an apocalyptic number.

It is an amenable number.

111131023113 is a deficient number, since it is larger than the sum of its proper divisors (68474671287).

111131023113 is a wasteful number, since it uses less digits than its factorization.

111131023113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374178549 (or 374178543 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 111131023113 its reverse (311320131111), we get a palindrome (422451154224).

The spelling of 111131023113 in words is "one hundred eleven billion, one hundred thirty-one million, twenty-three thousand, one hundred thirteen".