1311030112 has 48 divisors (see below), whose sum is σ = 2965358592. Its totient is φ = 558910080.

The previous prime is 1311030047. The next prime is 1311030113. The reversal of 1311030112 is 2110301131.

It is a junction number, because it is equal to n+sod(n) for n = 1311030092 and 1311030101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311030113) 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, 27463 + ... + 58105.

It is an arithmetic number, because the mean of its divisors is an integer number (61778304).

Almost surely, 2^1311030112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311030112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1482679296).

1311030112 is an abundant number, since it is smaller than the sum of its proper divisors (1654328480).

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

1311030112 is a wasteful number, since it uses less digits than its factorization.

1311030112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30851 (or 30843 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1311030112 is about 36208.1498008390. The cubic root of 1311030112 is about 1094.4709083218.

Adding to 1311030112 its reverse (2110301131), we get a palindrome (3421331243).

It can be divided in two parts, 1 and 311030112, that added together give a palindrome (311030113).

The spelling of 1311030112 in words is "one billion, three hundred eleven million, thirty thousand, one hundred twelve".