1320320005 has 8 divisors (see below), whose sum is σ = 1618094592. Its totient is φ = 1033782288.

The previous prime is 1320320003. The next prime is 1320320009. The reversal of 1320320005 is 5000230231.

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 1320320005 - 2¹ = 1320320003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320320003) 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, 2808957 + ... + 2809426.

It is an arithmetic number, because the mean of its divisors is an integer number (202261824).

Almost surely, 2^1320320005 is an apocalyptic number.

It is an amenable number.

1320320005 is a deficient number, since it is larger than the sum of its proper divisors (297774587).

1320320005 is an equidigital number, since it uses as much as digits as its factorization.

1320320005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5618435.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 1320320005 is about 36336.2079061643. The cubic root of 1320320005 is about 1097.0499480474.

Adding to 1320320005 its reverse (5000230231), we get a palindrome (6320550236).

The spelling of 1320320005 in words is "one billion, three hundred twenty million, three hundred twenty thousand, five".