1321602030323 has 2 divisors, whose sum is σ = 1321602030324. Its totient is φ = 1321602030322.

The previous prime is 1321602030293. The next prime is 1321602030373. The reversal of 1321602030323 is 3230302061231.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1321602030323 - 2³² = 1317307063027 is a prime.

It is a super-2 number, since 2×1321602030323² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1321602030292 and 1321602030301.

It is not a weakly prime, because it can be changed into another prime (1321602030373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660801015161 + 660801015162.

It is an arithmetic number, because the mean of its divisors is an integer number (660801015162).

Almost surely, 2^{1321602030323} is an apocalyptic number.

1321602030323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321602030323 is an equidigital number, since it uses as much as digits as its factorization.

1321602030323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 1321602030323 its reverse (3230302061231), we get a palindrome (4551904091554).

The spelling of 1321602030323 in words is "one trillion, three hundred twenty-one billion, six hundred two million, thirty thousand, three hundred twenty-three".