111111310312 has 16 divisors (see below), whose sum is σ = 211187594340. Its totient is φ = 54794618496.

The previous prime is 111111310291. The next prime is 111111310313. The reversal of 111111310312 is 213013111111.

It can be written as a sum of positive squares in 2 ways, for example, as 101629614436 + 9481695876 = 318794^2 + 97374^2 .

It is not an unprimeable number, because it can be changed into a prime (111111310313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95128963 + ... + 95130130.

Almost surely, 2^111111310312 is an apocalyptic number.

It is an amenable number.

111111310312 is a deficient number, since it is larger than the sum of its proper divisors (100076284028).

111111310312 is a wasteful number, since it uses less digits than its factorization.

111111310312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190259172 (or 190259168 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 111111310312 its reverse (213013111111), we get a palindrome (324124421423).

The spelling of 111111310312 in words is "one hundred eleven billion, one hundred eleven million, three hundred ten thousand, three hundred twelve".