2143343240 has 32 divisors (see below), whose sum is σ = 4828541760. Its totient is φ = 856267200.

The previous prime is 2143343239. The next prime is 2143343263. The reversal of 2143343240 is 423433412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596 + ... + 65475.

It is an arithmetic number, because the mean of its divisors is an integer number (150891930).

Almost surely, 2^2143343240 is an apocalyptic number.

2143343240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143343240 is an abundant number, since it is smaller than the sum of its proper divisors (2685198520).

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

2143343240 is a wasteful number, since it uses less digits than its factorization.

2143343240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66893 (or 66889 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 2143343240 is about 46296.2551401299. The cubic root of 2143343240 is about 1289.3294674390.

Adding to 2143343240 its reverse (423433412), we get a palindrome (2566776652).

The spelling of 2143343240 in words is "two billion, one hundred forty-three million, three hundred forty-three thousand, two hundred forty".