1311112 has 32 divisors (see below), whose sum is σ = 2747520. Its totient is φ = 581440.

The previous prime is 1311109. The next prime is 1311127. The reversal of 1311112 is 2111131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3978 + ... + 4294.

It is an arithmetic number, because the mean of its divisors is an integer number (85860).

2^1311112 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 1311112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1373760).

1311112 is an abundant number, since it is smaller than the sum of its proper divisors (1436408).

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

1311112 is a wasteful number, since it uses less digits than its factorization.

1311112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 377 counting only the distinct ones).

The product of its digits is 6, while the sum is 10.

The square root of 1311112 is about 1145.0379906361. The cubic root of 1311112 is about 109.4493695026.

Adding to 1311112 its reverse (2111131), we get a palindrome (3422243).

It can be divided in two parts, 1 and 311112, that added together give a palindrome (311113).

The spelling of 1311112 in words is "one million, three hundred eleven thousand, one hundred twelve".