2143254511 has 4 divisors (see below), whose sum is σ = 2256057400. Its totient is φ = 2030451624.

The previous prime is 2143254499. The next prime is 2143254521. The reversal of 2143254511 is 1154523412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2143254511 - 2¹⁹ = 2142730223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2143254511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143254521) 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, 56401416 + ... + 56401453.

It is an arithmetic number, because the mean of its divisors is an integer number (564014350).

Almost surely, 2^2143254511 is an apocalyptic number.

2143254511 is a deficient number, since it is larger than the sum of its proper divisors (112802889).

2143254511 is a wasteful number, since it uses less digits than its factorization.

2143254511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112802888.

The product of its digits is 4800, while the sum is 28.

The square root of 2143254511 is about 46295.2968561602. The cubic root of 2143254511 is about 1289.3116755316.

Adding to 2143254511 its reverse (1154523412), we get a palindrome (3297777923).

The spelling of 2143254511 in words is "two billion, one hundred forty-three million, two hundred fifty-four thousand, five hundred eleven".