111031312 has 40 divisors (see below), whose sum is σ = 246351296. Its totient is φ = 47488896.

The previous prime is 111031309. The next prime is 111031313. The reversal of 111031312 is 213130111.

It is a junction number, because it is equal to n+sod(n) for n = 111031292 and 111031301.

It is not an unprimeable number, because it can be changed into a prime (111031313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101038 + ... + 102130.

Almost surely, 2^111031312 is an apocalyptic number.

It is an amenable number.

111031312 is an abundant number, since it is smaller than the sum of its proper divisors (135319984).

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

111031312 is a wasteful number, since it uses less digits than its factorization.

111031312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015 (or 2009 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 111031312 is about 10537.1396498291. The cubic root of 111031312 is about 480.6347389721.

Adding to 111031312 its reverse (213130111), we get a palindrome (324161423).

The spelling of 111031312 in words is "one hundred eleven million, thirty-one thousand, three hundred twelve".