2102320321 has 8 divisors (see below), whose sum is σ = 2117182464. Its totient is φ = 2087507760.

The previous prime is 2102320277. The next prime is 2102320333. The reversal of 2102320321 is 1230232012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2102320321 - 2¹⁵ = 2102287553 is a prime.

It is a super-3 number, since 3×2102320321³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102320295 and 2102320304.

It is not an unprimeable number, because it can be changed into a prime (2102320021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74851 + ... + 99031.

It is an arithmetic number, because the mean of its divisors is an integer number (264647808).

Almost surely, 2^2102320321 is an apocalyptic number.

It is an amenable number.

2102320321 is a deficient number, since it is larger than the sum of its proper divisors (14862143).

2102320321 is a wasteful number, since it uses less digits than its factorization.

2102320321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24791.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2102320321 is about 45851.0667378634. The cubic root of 2102320321 is about 1281.0506349931.

Adding to 2102320321 its reverse (1230232012), we get a palindrome (3332552333).

The spelling of 2102320321 in words is "two billion, one hundred two million, three hundred twenty thousand, three hundred twenty-one".