132320321 has 4 divisors (see below), whose sum is σ = 151223232. Its totient is φ = 113417412.

The previous prime is 132320317. The next prime is 132320323. The reversal of 132320321 is 123023231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 132320321 - 2² = 132320317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 132320321.

It is not an unprimeable number, because it can be changed into a prime (132320323) 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, 9451445 + ... + 9451458.

It is an arithmetic number, because the mean of its divisors is an integer number (37805808).

Almost surely, 2^132320321 is an apocalyptic number.

It is an amenable number.

132320321 is a deficient number, since it is larger than the sum of its proper divisors (18902911).

132320321 is an equidigital number, since it uses as much as digits as its factorization.

132320321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18902910.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 132320321 is about 11503.0570284599. The cubic root of 132320321 is about 509.5758629260.

Adding to 132320321 its reverse (123023231), we get a palindrome (255343552).

The spelling of 132320321 in words is "one hundred thirty-two million, three hundred twenty thousand, three hundred twenty-one".