111230131312 has 80 divisors (see below), whose sum is σ = 230635238400. Its totient is φ = 51874905600.

The previous prime is 111230131289. The next prime is 111230131339. The reversal of 111230131312 is 213131032111.

It is a super-2 number, since 2×111230131312² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111230131312.

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 15 ways as a sum of consecutive naturals, for example, 1654939 + ... + 1720837.

It is an arithmetic number, because the mean of its divisors is an integer number (2882940480).

Almost surely, 2^111230131312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111230131312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115317619200).

111230131312 is an abundant number, since it is smaller than the sum of its proper divisors (119405107088).

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

111230131312 is a wasteful number, since it uses less digits than its factorization.

111230131312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66062 (or 66056 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 111230131312 its reverse (213131032111), we get a palindrome (324361163423).

The spelling of 111230131312 in words is "one hundred eleven billion, two hundred thirty million, one hundred thirty-one thousand, three hundred twelve".