1320300321 has 4 divisors (see below), whose sum is σ = 1760400432. Its totient is φ = 880200212.

The previous prime is 1320300299. The next prime is 1320300431. The reversal of 1320300321 is 1230030231.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1230030231 = 3 ⋅410010077.

It is a cyclic number.

It is not a de Polignac number, because 1320300321 - 2⁹ = 1320299809 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320300321.

It is not an unprimeable number, because it can be changed into a prime (1320300521) 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, 220050051 + ... + 220050056.

It is an arithmetic number, because the mean of its divisors is an integer number (440100108).

Almost surely, 2^1320300321 is an apocalyptic number.

It is an amenable number.

1320300321 is a deficient number, since it is larger than the sum of its proper divisors (440100111).

1320300321 is an equidigital number, since it uses as much as digits as its factorization.

1320300321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440100110.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1320300321 is about 36335.9370458504. The cubic root of 1320300321 is about 1097.0444962281.

Adding to 1320300321 its reverse (1230030231), we get a palindrome (2550330552).

The spelling of 1320300321 in words is "one billion, three hundred twenty million, three hundred thousand, three hundred twenty-one".