1321330223 has 8 divisors (see below), whose sum is σ = 1364610240. Its totient is φ = 1278682240.

The previous prime is 1321330189. The next prime is 1321330237. The reversal of 1321330223 is 3220331231.

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 1321330223 - 2⁶ = 1321330159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321330195 and 1321330204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321330123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153758 + ... + 162123.

It is an arithmetic number, because the mean of its divisors is an integer number (170576280).

Almost surely, 2^1321330223 is an apocalyptic number.

1321330223 is a deficient number, since it is larger than the sum of its proper divisors (43280017).

1321330223 is an equidigital number, since it uses as much as digits as its factorization.

1321330223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316017.

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

The square root of 1321330223 is about 36350.1062309314. The cubic root of 1321330223 is about 1097.3296724238.

Adding to 1321330223 its reverse (3220331231), we get a palindrome (4541661454).

The spelling of 1321330223 in words is "one billion, three hundred twenty-one million, three hundred thirty thousand, two hundred twenty-three".