2156143112 has 12 divisors (see below), whose sum is σ = 4043014605. Its totient is φ = 1078005888.

The previous prime is 2156143097. The next prime is 2156143117. The reversal of 2156143112 is 2113416512.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 2012957956 + 143185156 = 44866^2 + 11966^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=32834.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2156143117) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 123128 + ... + 139544.

Almost surely, 2^2156143112 is an apocalyptic number.

It is an amenable number.

2156143112 is a deficient number, since it is larger than the sum of its proper divisors (1886871493).

2156143112 is an frugal number, since it uses more digits than its factorization.

2156143112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32840 (or 16419 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 2156143112 is about 46434.2881069582. The cubic root of 2156143112 is about 1291.8909655036.

Adding to 2156143112 its reverse (2113416512), we get a palindrome (4269559624).

The spelling of 2156143112 in words is "two billion, one hundred fifty-six million, one hundred forty-three thousand, one hundred twelve".