1321310303233 has 4 divisors (see below), whose sum is σ = 1322760699648. Its totient is φ = 1319859906820.

The previous prime is 1321310303227. The next prime is 1321310303237. The reversal of 1321310303233 is 3323030131231.

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 a de Polignac number, because none of the positive numbers 2^k-1321310303233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321310303198 and 1321310303207.

It is not an unprimeable number, because it can be changed into a prime (1321310303237) 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 3 ways as a sum of consecutive naturals, for example, 725196841 + ... + 725198662.

It is an arithmetic number, because the mean of its divisors is an integer number (330690174912).

Almost surely, 2^{1321310303233} is an apocalyptic number.

It is an amenable number.

1321310303233 is a deficient number, since it is larger than the sum of its proper divisors (1450396415).

1321310303233 is an equidigital number, since it uses as much as digits as its factorization.

1321310303233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450396414.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 1321310303233 its reverse (3323030131231), we get a palindrome (4644340434464).

The spelling of 1321310303233 in words is "one trillion, three hundred twenty-one billion, three hundred ten million, three hundred three thousand, two hundred thirty-three".