2133131112 has 120 divisors (see below), whose sum is σ = 6950313810. Its totient is φ = 609456960.

The previous prime is 2133131093. The next prime is 2133131137. The reversal of 2133131112 is 2111313312.

2133131112 is a `hidden beast` number, since 21 + 331 + 311 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1148803236 + 984327876 = 33894^2 + 31374^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1839 + ... + 65342.

Almost surely, 2^2133131112 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 2133131112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3475156905).

2133131112 is an abundant number, since it is smaller than the sum of its proper divisors (4817182698).

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

2133131112 is a wasteful number, since it uses less digits than its factorization.

2133131112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67213 (or 67193 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 2133131112 is about 46185.8323731423. The cubic root of 2133131112 is about 1287.2785026575.

Adding to 2133131112 its reverse (2111313312), we get a palindrome (4244444424).

The spelling of 2133131112 in words is "two billion, one hundred thirty-three million, one hundred thirty-one thousand, one hundred twelve".