111013311231 has 48 divisors (see below), whose sum is σ = 167437711584. Its totient is φ = 70809437952.

The previous prime is 111013311223. The next prime is 111013311257. The reversal of 111013311231 is 132113310111.

111013311231 is a `hidden beast` number, since 1 + 1 + 101 + 331 + 1 + 231 = 666.

It is not a de Polignac number, because 111013311231 - 2³ = 111013311223 is a prime.

It is a super-2 number, since 2×111013311231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111013311271) 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 47 ways as a sum of consecutive naturals, for example, 13672585 + ... + 13680701.

It is an arithmetic number, because the mean of its divisors is an integer number (3488285658).

Almost surely, 2^111013311231 is an apocalyptic number.

111013311231 is a deficient number, since it is larger than the sum of its proper divisors (56424400353).

111013311231 is a wasteful number, since it uses less digits than its factorization.

111013311231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8840 (or 8837 counting only the distinct ones).

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

Adding to 111013311231 its reverse (132113310111), we get a palindrome (243126621342).

The spelling of 111013311231 in words is "one hundred eleven billion, thirteen million, three hundred eleven thousand, two hundred thirty-one".