111131031000000 has 784 divisors, whose sum is σ = 401416461803520. Its totient is φ = 26909568000000.

The previous prime is 111131030999993. The next prime is 111131031000037. The reversal of 111131031000000 is 130131111.

It is a super-2 number, since 2×111131031000000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 111131031000000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 42206998684 + ... + 42207001316.

Almost surely, 2^{111131031000000} is an apocalyptic number.

111131031000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111131031000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200708230901760).

111131031000000 is an abundant number, since it is smaller than the sum of its proper divisors (290285430803520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111131031000000 is an equidigital number, since it uses as much as digits as its factorization.

111131031000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3968 (or 3933 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 12.

Adding to 111131031000000 its reverse (130131111), we get a palindrome (111131161131111).

The spelling of 111131031000000 in words is "one hundred eleven trillion, one hundred thirty-one billion, thirty-one million", and thus it is an aban number.