111030031312 has 20 divisors (see below), whose sum is σ = 215145237636. Its totient is φ = 55508679680.

The previous prime is 111030031297. The next prime is 111030031313. The reversal of 111030031312 is 213130030111.

It can be written as a sum of positive squares in 2 ways, for example, as 109934686096 + 1095345216 = 331564^2 + 33096^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111030031313) 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, 249793 + ... + 533344.

Almost surely, 2^111030031312 is an apocalyptic number.

It is an amenable number.

111030031312 is a deficient number, since it is larger than the sum of its proper divisors (104115206324).

111030031312 is an equidigital number, since it uses as much as digits as its factorization.

111030031312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792006 (or 792000 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 111030031312 its reverse (213130030111), we get a palindrome (324160061423).

The spelling of 111030031312 in words is "one hundred eleven billion, thirty million, thirty-one thousand, three hundred twelve".