111331331231 has 8 divisors (see below), whose sum is σ = 118033977600. Its totient is φ = 104712995160.

The previous prime is 111331331219. The next prime is 111331331239. The reversal of 111331331231 is 132133133111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111331331231 is a prime.

It is a super-2 number, since 2×111331331231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111331331197 and 111331331206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111331331239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21074855 + ... + 21080136.

It is an arithmetic number, because the mean of its divisors is an integer number (14754247200).

Almost surely, 2^111331331231 is an apocalyptic number.

111331331231 is a deficient number, since it is larger than the sum of its proper divisors (6702646369).

111331331231 is a wasteful number, since it uses less digits than its factorization.

111331331231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42155149.

The product of its digits is 486, while the sum is 23.

Adding to 111331331231 its reverse (132133133111), we get a palindrome (243464464342).

The spelling of 111331331231 in words is "one hundred eleven billion, three hundred thirty-one million, three hundred thirty-one thousand, two hundred thirty-one".