2343143440 has 160 divisors (see below), whose sum is σ = 6157855872. Its totient is φ = 821760000.

The previous prime is 2343143417. The next prime is 2343143447. The reversal of 2343143440 is 443413432.

It is a junction number, because it is equal to n+sod(n) for n = 2343143399 and 2343143408.

It is not an unprimeable number, because it can be changed into a prime (2343143447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3643759 + ... + 3644401.

Almost surely, 2^2343143440 is an apocalyptic number.

2343143440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2343143440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3078927936).

2343143440 is an abundant number, since it is smaller than the sum of its proper divisors (3814712432).

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

2343143440 is a wasteful number, since it uses less digits than its factorization.

2343143440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809 (or 803 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

The square root of 2343143440 is about 48406.0268974846. The cubic root of 2343143440 is about 1328.2086120482.

Adding to 2343143440 its reverse (443413432), we get a palindrome (2786556872).

The spelling of 2343143440 in words is "two billion, three hundred forty-three million, one hundred forty-three thousand, four hundred forty".