111542312 has 64 divisors (see below), whose sum is σ = 254976000. Its totient is φ = 44680896.

The previous prime is 111542303. The next prime is 111542317. The reversal of 111542312 is 213245111.

111542312 is nontrivially palindromic in base 9.

It is not an unprimeable number, because it can be changed into a prime (111542317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83393 + ... + 84719.

It is an arithmetic number, because the mean of its divisors is an integer number (3984000).

Almost surely, 2^111542312 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 111542312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127488000).

111542312 is an abundant number, since it is smaller than the sum of its proper divisors (143433688).

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

111542312 is a wasteful number, since it uses less digits than its factorization.

111542312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438 (or 1434 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 111542312 is about 10561.3593822008. The cubic root of 111542312 is about 481.3709533053.

Adding to 111542312 its reverse (213245111), we get a palindrome (324787423).

The spelling of 111542312 in words is "one hundred eleven million, five hundred forty-two thousand, three hundred twelve".