2143320520 has 32 divisors (see below), whose sum is σ = 5260878720. Its totient is φ = 779389120.

The previous prime is 2143320503. The next prime is 2143320521. The reversal of 2143320520 is 250233412.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 2143320491 and 2143320500.

It is not an unprimeable number, because it can be changed into a prime (2143320521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2435152 + ... + 2436031.

It is an arithmetic number, because the mean of its divisors is an integer number (164402460).

Almost surely, 2^2143320520 is an apocalyptic number.

2143320520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143320520 is an abundant number, since it is smaller than the sum of its proper divisors (3117558200).

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

2143320520 is a wasteful number, since it uses less digits than its factorization.

2143320520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4871205 (or 4871201 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 2143320520 is about 46296.0097632615. The cubic root of 2143320520 is about 1289.3249116795.

Adding to 2143320520 its reverse (250233412), we get a palindrome (2393553932).

The spelling of 2143320520 in words is "two billion, one hundred forty-three million, three hundred twenty thousand, five hundred twenty".