11312313111 has 72 divisors (see below), whose sum is σ = 19423115712. Its totient is φ = 6314880000.

The previous prime is 11312313097. The next prime is 11312313143. The reversal of 11312313111 is 11131321311.

11312313111 is a `hidden beast` number, since 11 + 312 + 31 + 311 + 1 = 666.

It is not a de Polignac number, because 11312313111 - 2⁷ = 11312312983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312313151) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 863611 + ... + 876611.

It is an arithmetic number, because the mean of its divisors is an integer number (269765496).

Almost surely, 2^11312313111 is an apocalyptic number.

11312313111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11312313111 is a deficient number, since it is larger than the sum of its proper divisors (8110802601).

11312313111 is a wasteful number, since it uses less digits than its factorization.

11312313111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13093 (or 13079 counting only the distinct ones).

The product of its digits is 54, while the sum is 18.

Adding to 11312313111 its reverse (11131321311), we get a palindrome (22443634422).

It can be divided in two parts, 11312 and 313111, that added together give a palindrome (324423).

The spelling of 11312313111 in words is "eleven billion, three hundred twelve million, three hundred thirteen thousand, one hundred eleven".