1312312112 has 10 divisors (see below), whose sum is σ = 2542604748. Its totient is φ = 656156048.

The previous prime is 1312312109. The next prime is 1312312129. The reversal of 1312312112 is 2112132131.

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 as a sum of consecutive naturals, namely, 41009738 + ... + 41009769.

Almost surely, 2^1312312112 is an apocalyptic number.

It is an amenable number.

1312312112 is a deficient number, since it is larger than the sum of its proper divisors (1230292636).

1312312112 is an equidigital number, since it uses as much as digits as its factorization.

1312312112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82019515 (or 82019509 counting only the distinct ones).

The product of its digits is 72, while the sum is 17.

The square root of 1312312112 is about 36225.8486719083. The cubic root of 1312312112 is about 1094.8275374570.

Adding to 1312312112 its reverse (2112132131), we get a palindrome (3424444243).

The spelling of 1312312112 in words is "one billion, three hundred twelve million, three hundred twelve thousand, one hundred twelve".