2143230505 has 32 divisors (see below), whose sum is σ = 2933409024. Its totient is φ = 1491215616.

The previous prime is 2143230499. The next prime is 2143230559. The reversal of 2143230505 is 5050323412.

It is a cyclic number.

It is not a de Polignac number, because 2143230505 - 2¹¹ = 2143228457 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 2143230505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89467 + ... + 110863.

It is an arithmetic number, because the mean of its divisors is an integer number (91669032).

Almost surely, 2^2143230505 is an apocalyptic number.

It is an amenable number.

2143230505 is a deficient number, since it is larger than the sum of its proper divisors (790178519).

2143230505 is a wasteful number, since it uses less digits than its factorization.

2143230505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21505.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 2143230505 is about 46295.0375850371. The cubic root of 2143230505 is about 1289.3068617727.

Adding to 2143230505 its reverse (5050323412), we get a palindrome (7193553917).

The spelling of 2143230505 in words is "two billion, one hundred forty-three million, two hundred thirty thousand, five hundred five".