1321602030373 has 2 divisors, whose sum is σ = 1321602030374. Its totient is φ = 1321602030372.

The previous prime is 1321602030323. The next prime is 1321602030401. The reversal of 1321602030373 is 3730302061231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 907795445089 + 413806585284 = 952783^2 + 643278^2 .

It is an emirp because it is prime and its reverse (3730302061231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1321602030373 - 2²¹ = 1321599933221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321602030323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660801015186 + 660801015187.

It is an arithmetic number, because the mean of its divisors is an integer number (660801015187).

Almost surely, 2^{1321602030373} is an apocalyptic number.

It is an amenable number.

1321602030373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321602030373 is an equidigital number, since it uses as much as digits as its factorization.

1321602030373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 31.

The spelling of 1321602030373 in words is "one trillion, three hundred twenty-one billion, six hundred two million, thirty thousand, three hundred seventy-three".