3111133212 has 120 divisors (see below), whose sum is σ = 9394585200. Its totient is φ = 887293440.

The previous prime is 3111133187. The next prime is 3111133273. The reversal of 3111133212 is 2123311113.

3111133212 is a `hidden beast` number, since 311 + 11 + 332 + 12 = 666.

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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 34914 + ... + 86262.

It is an arithmetic number, because the mean of its divisors is an integer number (78288210).

Almost surely, 2^3111133212 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 3111133212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4697292600).

3111133212 is an abundant number, since it is smaller than the sum of its proper divisors (6283451988).

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

3111133212 is a wasteful number, since it uses less digits than its factorization.

3111133212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51393 (or 51382 counting only the distinct ones).

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

The square root of 3111133212 is about 55777.5332190300. The cubic root of 3111133212 is about 1459.8431701187.

Adding to 3111133212 its reverse (2123311113), we get a palindrome (5234444325).

The spelling of 3111133212 in words is "three billion, one hundred eleven million, one hundred thirty-three thousand, two hundred twelve".