2143131112 has 16 divisors (see below), whose sum is σ = 4254745860. Its totient is φ = 1008532224.

The previous prime is 2143131083. The next prime is 2143131119. The reversal of 2143131112 is 2111313412.

It can be written as a sum of positive squares in 2 ways, for example, as 1808460676 + 334670436 = 42526^2 + 18294^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2143131112.

It is not an unprimeable number, because it can be changed into a prime (2143131119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7879023 + ... + 7879294.

Almost surely, 2^2143131112 is an apocalyptic number.

It is an amenable number.

2143131112 is a deficient number, since it is larger than the sum of its proper divisors (2111614748).

2143131112 is a wasteful number, since it uses less digits than its factorization.

2143131112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15758340 (or 15758336 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 2143131112 is about 46293.9640990054. The cubic root of 2143131112 is about 1289.2869307919.

Adding to 2143131112 its reverse (2111313412), we get a palindrome (4254444524).

The spelling of 2143131112 in words is "two billion, one hundred forty-three million, one hundred thirty-one thousand, one hundred twelve".