1321304004353 has 2 divisors, whose sum is σ = 1321304004354. Its totient is φ = 1321304004352.

The previous prime is 1321304004313. The next prime is 1321304004359. The reversal of 1321304004353 is 3534004031231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 993745809424 + 327558194929 = 996868^2 + 572327^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321304004353 - 2¹⁰ = 1321304003329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1321304004359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660652002176 + 660652002177.

It is an arithmetic number, because the mean of its divisors is an integer number (660652002177).

Almost surely, 2^{1321304004353} is an apocalyptic number.

It is an amenable number.

1321304004353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321304004353 is an equidigital number, since it uses as much as digits as its factorization.

1321304004353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 1321304004353 its reverse (3534004031231), we get a palindrome (4855308035584).

The spelling of 1321304004353 in words is "one trillion, three hundred twenty-one billion, three hundred four million, four thousand, three hundred fifty-three".