2143311212 has 36 divisors (see below), whose sum is σ = 4481131536. Its totient is φ = 878618400.

The previous prime is 2143311197. The next prime is 2143311223. The reversal of 2143311212 is 2121133412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57539 + ... + 87162.

It is an arithmetic number, because the mean of its divisors is an integer number (124475876).

Almost surely, 2^2143311212 is an apocalyptic number.

It is an amenable number.

2143311212 is an abundant number, since it is smaller than the sum of its proper divisors (2337820324).

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

2143311212 is a wasteful number, since it uses less digits than its factorization.

2143311212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144758 (or 144733 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 2143311212 is about 46295.9092361301. The cubic root of 2143311212 is about 1289.3230452525.

Adding to 2143311212 its reverse (2121133412), we get a palindrome (4264444624).

The spelling of 2143311212 in words is "two billion, one hundred forty-three million, three hundred eleven thousand, two hundred twelve".