1320332321 has 8 divisors (see below), whose sum is σ = 1646128704. Its totient is φ = 1028830320.

The previous prime is 1320332311. The next prime is 1320332323. The reversal of 1320332321 is 1232330231.

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

It is not a de Polignac number, because 1320332321 - 2¹⁴ = 1320315937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1320332293 and 1320332302.

It is not an unprimeable number, because it can be changed into a prime (1320332323) 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, 8573510 + ... + 8573663.

It is an arithmetic number, because the mean of its divisors is an integer number (205766088).

Almost surely, 2^1320332321 is an apocalyptic number.

1320332321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1320332321 is a deficient number, since it is larger than the sum of its proper divisors (325796383).

1320332321 is a wasteful number, since it uses less digits than its factorization.

1320332321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17147191.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1320332321 is about 36336.3773785995. The cubic root of 1320332321 is about 1097.0533591460.

Adding to 1320332321 its reverse (1232330231), we get a palindrome (2552662552).

The spelling of 1320332321 in words is "one billion, three hundred twenty million, three hundred thirty-two thousand, three hundred twenty-one".