2143230556 has 12 divisors (see below), whose sum is σ = 3842133120. Its totient is φ = 1045478240.

The previous prime is 2143230499. The next prime is 2143230559. The reversal of 2143230556 is 6550323412.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143230559) 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, 6534076 + ... + 6534403.

It is an arithmetic number, because the mean of its divisors is an integer number (320177760).

Almost surely, 2^2143230556 is an apocalyptic number.

It is an amenable number.

2143230556 is a deficient number, since it is larger than the sum of its proper divisors (1698902564).

2143230556 is a wasteful number, since it uses less digits than its factorization.

2143230556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13068524 (or 13068522 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 2143230556 is about 46295.0381358521. The cubic root of 2143230556 is about 1289.3068719994.

Adding to 2143230556 its reverse (6550323412), we get a palindrome (8693553968).

The spelling of 2143230556 in words is "two billion, one hundred forty-three million, two hundred thirty thousand, five hundred fifty-six".