2143353344 has 120 divisors (see below), whose sum is σ = 4873633380. Its totient is φ = 939868160.

The previous prime is 2143353293. The next prime is 2143353367. The reversal of 2143353344 is 4433533412.

It can be written as a sum of positive squares in 2 ways, for example, as 2142578944 + 774400 = 46288^2 + 880^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 2143353344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1796012 + ... + 1797204.

Almost surely, 2^2143353344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2143353344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2436816690).

2143353344 is an abundant number, since it is smaller than the sum of its proper divisors (2730280036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2143353344 is a wasteful number, since it uses less digits than its factorization.

2143353344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262 (or 1235 counting only the distinct ones).

The product of its digits is 51840, while the sum is 32.

The square root of 2143353344 is about 46296.3642632983. The cubic root of 2143353344 is about 1289.3314934583.

Adding to 2143353344 its reverse (4433533412), we get a palindrome (6576886756).

The spelling of 2143353344 in words is "two billion, one hundred forty-three million, three hundred fifty-three thousand, three hundred forty-four".