1311311112 has 32 divisors (see below), whose sum is σ = 3279386400. Its totient is φ = 436955904.

The previous prime is 1311311081. The next prime is 1311311143. The reversal of 1311311112 is 2111131131.

It is an interprime number because it is at equal distance from previous prime (1311311081) and next prime (1311311143).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1311311091 and 1311311100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81339 + ... + 96117.

It is an arithmetic number, because the mean of its divisors is an integer number (102480825).

Almost surely, 2^1311311112 is an apocalyptic number.

1311311112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1311311112 is an abundant number, since it is smaller than the sum of its proper divisors (1968075288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311311112 is a wasteful number, since it uses less digits than its factorization.

1311311112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18485 (or 18481 counting only the distinct ones).

The product of its digits is 18, while the sum is 15.

The square root of 1311311112 is about 36212.0299348159. The cubic root of 1311311112 is about 1094.5490973104.

Adding to 1311311112 its reverse (2111131131), we get a palindrome (3422442243).

The spelling of 1311311112 in words is "one billion, three hundred eleven million, three hundred eleven thousand, one hundred twelve".