2143331320 has 64 divisors (see below), whose sum is σ = 5361027840. Its totient is φ = 765849600.

The previous prime is 2143331299. The next prime is 2143331329. The reversal of 2143331320 is 231333412.

It is a junction number, because it is equal to n+sod(n) for n = 2143331291 and 2143331300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143331329) 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, 50361 + ... + 82600.

It is an arithmetic number, because the mean of its divisors is an integer number (83766060).

Almost surely, 2^2143331320 is an apocalyptic number.

2143331320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143331320 is an abundant number, since it is smaller than the sum of its proper divisors (3217696520).

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

2143331320 is a wasteful number, since it uses less digits than its factorization.

2143331320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133016 (or 133012 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 2143331320 is about 46296.1264038364. The cubic root of 2143331320 is about 1289.3270772734.

Adding to 2143331320 its reverse (231333412), we get a palindrome (2374664732).

The spelling of 2143331320 in words is "two billion, one hundred forty-three million, three hundred thirty-one thousand, three hundred twenty".