20203232321 has 8 divisors (see below), whose sum is σ = 20227412160. Its totient is φ = 20179070352.

The previous prime is 20203232297. The next prime is 20203232411. The reversal of 20203232321 is 12323230202.

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 20203232321 - 2²⁶ = 20136123457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20203232293 and 20203232302.

It is not an unprimeable number, because it can be changed into a prime (20203232521) 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, 4275266 + ... + 4279988.

It is an arithmetic number, because the mean of its divisors is an integer number (2528426520).

Almost surely, 2^20203232321 is an apocalyptic number.

It is an amenable number.

20203232321 is a deficient number, since it is larger than the sum of its proper divisors (24179839).

20203232321 is a wasteful number, since it uses less digits than its factorization.

20203232321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8935.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20203232321 its reverse (12323230202), we get a palindrome (32526462523).

The spelling of 20203232321 in words is "twenty billion, two hundred three million, two hundred thirty-two thousand, three hundred twenty-one".