1321302313213 has 8 divisors (see below), whose sum is σ = 1327286672600. Its totient is φ = 1315319819328.

The previous prime is 1321302313207. The next prime is 1321302313231. The reversal of 1321302313213 is 3123132031231.

It can be written as a sum of positive squares in 4 ways, for example, as 391809646809 + 929492666404 = 625947^2 + 964102^2 .

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 1321302313213 - 2²⁹ = 1320765442301 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 (1321302323213) 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, 963295 + ... + 1889587.

It is an arithmetic number, because the mean of its divisors is an integer number (165910834075).

Almost surely, 2^{1321302313213} is an apocalyptic number.

It is an amenable number.

1321302313213 is a deficient number, since it is larger than the sum of its proper divisors (5984359387).

1321302313213 is an equidigital number, since it uses as much as digits as its factorization.

1321302313213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932751.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1321302313213 its reverse (3123132031231), we get a palindrome (4444434344444).

The spelling of 1321302313213 in words is "one trillion, three hundred twenty-one billion, three hundred two million, three hundred thirteen thousand, two hundred thirteen".