2143021343 has 16 divisors (see below), whose sum is σ = 2492363520. Its totient is φ = 1827720576.

The previous prime is 2143021339. The next prime is 2143021369. The reversal of 2143021343 is 3431203412.

It is not a de Polignac number, because 2143021343 - 2² = 2143021339 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143021373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136805 + ... + 151662.

It is an arithmetic number, because the mean of its divisors is an integer number (155772720).

Almost surely, 2^2143021343 is an apocalyptic number.

2143021343 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2143021343 is a deficient number, since it is larger than the sum of its proper divisors (349342177).

2143021343 is a wasteful number, since it uses less digits than its factorization.

2143021343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288526.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 2143021343 is about 46292.7785189008. The cubic root of 2143021343 is about 1289.2649184268.

Adding to 2143021343 its reverse (3431203412), we get a palindrome (5574224755).

The spelling of 2143021343 in words is "two billion, one hundred forty-three million, twenty-one thousand, three hundred forty-three".