3111231212 has 12 divisors (see below), whose sum is σ = 5445871200. Its totient is φ = 1555268016.

The previous prime is 3111231191. The next prime is 3111231239. The reversal of 3111231212 is 2121321113.

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, 66212 + ... + 102987.

It is an arithmetic number, because the mean of its divisors is an integer number (453822600).

Almost surely, 2^3111231212 is an apocalyptic number.

It is an amenable number.

3111231212 is a deficient number, since it is larger than the sum of its proper divisors (2334639988).

3111231212 is a wasteful number, since it uses less digits than its factorization.

3111231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173800 (or 173798 counting only the distinct ones).

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

The square root of 3111231212 is about 55778.4117020196. The cubic root of 3111231212 is about 1459.8584982022.

Adding to 3111231212 its reverse (2121321113), we get a palindrome (5232552325).

The spelling of 3111231212 in words is "three billion, one hundred eleven million, two hundred thirty-one thousand, two hundred twelve".