1321322323 has 2 divisors, whose sum is σ = 1321322324. Its totient is φ = 1321322322.

The previous prime is 1321322311. The next prime is 1321322357. The reversal of 1321322323 is 3232231231.

It is a weak prime.

It is an emirp because it is prime and its reverse (3232231231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1321322323 - 2⁵ = 1321322291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1321322294 and 1321322303.

It is not a weakly prime, because it can be changed into another prime (1321322363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660661161 + 660661162.

It is an arithmetic number, because the mean of its divisors is an integer number (660661162).

Almost surely, 2^1321322323 is an apocalyptic number.

1321322323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321322323 is an equidigital number, since it uses as much as digits as its factorization.

1321322323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 22.

The square root of 1321322323 is about 36349.9975653369. The cubic root of 1321322323 is about 1097.3274855060.

Adding to 1321322323 its reverse (3232231231), we get a palindrome (4553553554).

The spelling of 1321322323 in words is "one billion, three hundred twenty-one million, three hundred twenty-two thousand, three hundred twenty-three".