2143143311 has 4 divisors (see below), whose sum is σ = 2143672800. Its totient is φ = 2142613824.

The previous prime is 2143143293. The next prime is 2143143329. The reversal of 2143143311 is 1133413412.

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

It is an interprime number because it is at equal distance from previous prime (2143143293) and next prime (2143143329).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2143143311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143143371) 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, 258626 + ... + 266783.

It is an arithmetic number, because the mean of its divisors is an integer number (535918200).

Almost surely, 2^2143143311 is an apocalyptic number.

2143143311 is a deficient number, since it is larger than the sum of its proper divisors (529489).

2143143311 is an equidigital number, since it uses as much as digits as its factorization.

2143143311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529488.

The product of its digits is 864, while the sum is 23.

The square root of 2143143311 is about 46294.0958546552. The cubic root of 2143143311 is about 1289.2893770541.

Adding to 2143143311 its reverse (1133413412), we get a palindrome (3276556723).

The spelling of 2143143311 in words is "two billion, one hundred forty-three million, one hundred forty-three thousand, three hundred eleven".