2143423320 has 64 divisors (see below), whose sum is σ = 6604074720. Its totient is φ = 556130304.

The previous prime is 2143423319. The next prime is 2143423327. The reversal of 2143423320 is 233243412.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143423327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236937 + ... + 245816.

Almost surely, 2^2143423320 is an apocalyptic number.

2143423320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143423320 is an abundant number, since it is smaller than the sum of its proper divisors (4460651400).

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

2143423320 is a wasteful number, since it uses less digits than its factorization.

2143423320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482804 (or 482800 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 2143423320 is about 46297.1199968205. The cubic root of 2143423320 is about 1289.3455246304.

Adding to 2143423320 its reverse (233243412), we get a palindrome (2376666732).

The spelling of 2143423320 in words is "two billion, one hundred forty-three million, four hundred twenty-three thousand, three hundred twenty".