3111122320 has 160 divisors (see below), whose sum is σ = 7943241600. Its totient is φ = 1128701952.

The previous prime is 3111122269. The next prime is 3111122327. The reversal of 3111122320 is 232211113.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 3111122294 and 3111122303.

It is not an unprimeable number, because it can be changed into a prime (3111122327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7184824 + ... + 7185256.

It is an arithmetic number, because the mean of its divisors is an integer number (49645260).

Almost surely, 2^3111122320 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 3111122320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3971620800).

3111122320 is an abundant number, since it is smaller than the sum of its proper divisors (4832119280).

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

3111122320 is a wasteful number, since it uses less digits than its factorization.

3111122320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 651 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 3111122320 is about 55777.4355810663. The cubic root of 3111122320 is about 1459.8414664918.

Adding to 3111122320 its reverse (232211113), we get a palindrome (3343333433).

The spelling of 3111122320 in words is "three billion, one hundred eleven million, one hundred twenty-two thousand, three hundred twenty".