1112131312 has 20 divisors (see below), whose sum is σ = 2171207016. Its totient is φ = 551819840.

The previous prime is 1112131283. The next prime is 1112131327. The reversal of 1112131312 is 2131312111.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263203 + ... + 267394.

Almost surely, 2^1112131312 is an apocalyptic number.

It is an amenable number.

1112131312 is a deficient number, since it is larger than the sum of its proper divisors (1059075704).

1112131312 is a wasteful number, since it uses less digits than its factorization.

1112131312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530736 (or 530730 counting only the distinct ones).

The product of its digits is 36, while the sum is 16.

The square root of 1112131312 is about 33348.6328355451. The cubic root of 1112131312 is about 1036.0610718161.

Adding to 1112131312 its reverse (2131312111), we get a palindrome (3243443423).

It can be divided in two parts, 111 and 2131312, that multiplied together give a palindrome (236575632).

The spelling of 1112131312 in words is "one billion, one hundred twelve million, one hundred thirty-one thousand, three hundred twelve".