1312112311 has 8 divisors (see below), whose sum is σ = 1335550464. Its totient is φ = 1288879200.

The previous prime is 1312112297. The next prime is 1312112339. The reversal of 1312112311 is 1132112131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312112311 - 2⁷ = 1312112183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312112341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38320 + ... + 63973.

It is an arithmetic number, because the mean of its divisors is an integer number (166943808).

Almost surely, 2^1312112311 is an apocalyptic number.

1312112311 is a deficient number, since it is larger than the sum of its proper divisors (23438153).

1312112311 is a wasteful number, since it uses less digits than its factorization.

1312112311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102521.

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

The square root of 1312112311 is about 36223.0908537634. The cubic root of 1312112311 is about 1094.7719717276.

Adding to 1312112311 its reverse (1132112131), we get a palindrome (2444224442).

The spelling of 1312112311 in words is "one billion, three hundred twelve million, one hundred twelve thousand, three hundred eleven".