3111724812 has 120 divisors (see below), whose sum is σ = 8969967216. Its totient is φ = 836634624.

The previous prime is 3111724801. The next prime is 3111724813. The reversal of 3111724812 is 2184271113.

3111724812 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3111724812.

It is not an unprimeable number, because it can be changed into a prime (3111724813) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 486628 + ... + 492980.

Almost surely, 2^3111724812 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 3111724812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4484983608).

3111724812 is an abundant number, since it is smaller than the sum of its proper divisors (5858242404).

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

3111724812 is a wasteful number, since it uses less digits than its factorization.

3111724812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6405 (or 6382 counting only the distinct ones).

The product of its digits is 2688, while the sum is 30.

The square root of 3111724812 is about 55782.8361774480. The cubic root of 3111724812 is about 1459.9356967989.

Adding to 3111724812 its reverse (2184271113), we get a palindrome (5295995925).

The spelling of 3111724812 in words is "three billion, one hundred eleven million, seven hundred twenty-four thousand, eight hundred twelve".