2143240304 has 20 divisors (see below), whose sum is σ = 4286481600. Its totient is φ = 1037051520.

The previous prime is 2143240277. The next prime is 2143240343. The reversal of 2143240304 is 4030423412.

2143240304 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 2143240304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2160029 + ... + 2161020.

It is an arithmetic number, because the mean of its divisors is an integer number (214324080).

Almost surely, 2^2143240304 is an apocalyptic number.

It is an amenable number.

2143240304 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2143240304 is a wasteful number, since it uses less digits than its factorization.

2143240304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4321088 (or 4321082 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 2143240304 is about 46295.1434169935. The cubic root of 2143240304 is about 1289.3088267035.

Adding to 2143240304 its reverse (4030423412), we get a palindrome (6173663716).

The spelling of 2143240304 in words is "two billion, one hundred forty-three million, two hundred forty thousand, three hundred four".