1312313111 has 8 divisors (see below), whose sum is σ = 1356432000. Its totient is φ = 1268305920.

The previous prime is 1312313063. The next prime is 1312313129. The reversal of 1312313111 is 1113132131.

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 1312313111 - 2³⁰ = 238571287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312313111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312313131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3686 + ... + 51363.

It is an arithmetic number, because the mean of its divisors is an integer number (169554000).

Almost surely, 2^1312313111 is an apocalyptic number.

1312313111 is a deficient number, since it is larger than the sum of its proper divisors (44118889).

1312313111 is an equidigital number, since it uses as much as digits as its factorization.

1312313111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55849.

The product of its digits is 54, while the sum is 17.

The square root of 1312313111 is about 36225.8624604025. The cubic root of 1312313111 is about 1094.8278152701.

Adding to 1312313111 its reverse (1113132131), we get a palindrome (2425445242).

The spelling of 1312313111 in words is "one billion, three hundred twelve million, three hundred thirteen thousand, one hundred eleven".