3111122312 has 16 divisors (see below), whose sum is σ = 5975631900. Its totient is φ = 1517620480.

The previous prime is 3111122269. The next prime is 3111122327. The reversal of 3111122312 is 2132211113.

It can be written as a sum of positive squares in 2 ways, for example, as 2766128836 + 344993476 = 52594^2 + 18574^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4742237 + ... + 4742892.

Almost surely, 2^3111122312 is an apocalyptic number.

It is an amenable number.

3111122312 is a deficient number, since it is larger than the sum of its proper divisors (2864509588).

3111122312 is a wasteful number, since it uses less digits than its factorization.

3111122312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9485176 (or 9485172 counting only the distinct ones).

The product of its digits is 72, while the sum is 17.

The square root of 3111122312 is about 55777.4355093527. The cubic root of 3111122312 is about 1459.8414652405.

Adding to 3111122312 its reverse (2132211113), we get a palindrome (5243333425).

The spelling of 3111122312 in words is "three billion, one hundred eleven million, one hundred twenty-two thousand, three hundred twelve".