32331320321 has 4 divisors (see below), whose sum is σ = 32340475092. Its totient is φ = 32322165552.

The previous prime is 32331320293. The next prime is 32331320369. The reversal of 32331320321 is 12302313323.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19730135296 + 12601185025 = 140464^2 + 112255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32331320321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (32331320381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4572086 + ... + 4579151.

It is an arithmetic number, because the mean of its divisors is an integer number (8085118773).

Almost surely, 2^32331320321 is an apocalyptic number.

It is an amenable number.

32331320321 is a deficient number, since it is larger than the sum of its proper divisors (9154771).

32331320321 is an equidigital number, since it uses as much as digits as its factorization.

32331320321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9154770.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 32331320321 its reverse (12302313323), we get a palindrome (44633633644).

The spelling of 32331320321 in words is "thirty-two billion, three hundred thirty-one million, three hundred twenty thousand, three hundred twenty-one".