3111816 has 64 divisors (see below), whose sum is σ = 8553600. Its totient is φ = 939008.

The previous prime is 3111809. The next prime is 3111817. The reversal of 3111816 is 6181113.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3111792 and 3111801.

It is not an unprimeable number, because it can be changed into a prime (3111817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11701 + ... + 11963.

It is an arithmetic number, because the mean of its divisors is an integer number (133650).

Almost surely, 2^3111816 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 3111816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4276800).

3111816 is an abundant number, since it is smaller than the sum of its proper divisors (5441784).

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

3111816 is a wasteful number, since it uses less digits than its factorization.

3111816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 314 counting only the distinct ones).

The product of its digits is 144, while the sum is 21.

The square root of 3111816 is about 1764.0340132775. The cubic root of 3111816 is about 145.9949957627.

Adding to 3111816 its reverse (6181113), we get a palindrome (9292929).

The spelling of 3111816 in words is "three million, one hundred eleven thousand, eight hundred sixteen".