111031123005 has 40 divisors (see below), whose sum is σ = 217127538144. Its totient is φ = 53833269600.

The previous prime is 111031122971. The next prime is 111031123037. The reversal of 111031123005 is 500321130111.

It is not a de Polignac number, because 111031123005 - 2⁷ = 111031122877 is a prime.

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 12456951 + ... + 12465860.

Almost surely, 2^111031123005 is an apocalyptic number.

111031123005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111031123005 is a deficient number, since it is larger than the sum of its proper divisors (106096415139).

111031123005 is a wasteful number, since it uses less digits than its factorization.

111031123005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24922839 (or 24922830 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

Adding to 111031123005 its reverse (500321130111), we get a palindrome (611352253116).

The spelling of 111031123005 in words is "one hundred eleven billion, thirty-one million, one hundred twenty-three thousand, five".