1313321321189 has 2 divisors, whose sum is σ = 1313321321190. Its totient is φ = 1313321321188.

The previous prime is 1313321321149. The next prime is 1313321321251. The reversal of 1313321321189 is 9811231233131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1081631200225 + 231690120964 = 1040015^2 + 481342^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313321321189 - 2¹² = 1313321317093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313321321129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656660660594 + 656660660595.

It is an arithmetic number, because the mean of its divisors is an integer number (656660660595).

Almost surely, 2^{1313321321189} is an apocalyptic number.

It is an amenable number.

1313321321189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313321321189 is an equidigital number, since it uses as much as digits as its factorization.

1313321321189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The spelling of 1313321321189 in words is "one trillion, three hundred thirteen billion, three hundred twenty-one million, three hundred twenty-one thousand, one hundred eighty-nine".