1323012013273 has 2 divisors, whose sum is σ = 1323012013274. Its totient is φ = 1323012013272.

The previous prime is 1323012013261. The next prime is 1323012013291. The reversal of 1323012013273 is 3723102103231.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 729500475664 + 593511537609 = 854108^2 + 770397^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323012013273 - 2³³ = 1314422078681 is a prime.

It is not a weakly prime, because it can be changed into another prime (1323012113273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661506006636 + 661506006637.

It is an arithmetic number, because the mean of its divisors is an integer number (661506006637).

Almost surely, 2^{1323012013273} is an apocalyptic number.

It is an amenable number.

1323012013273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323012013273 is an equidigital number, since it uses as much as digits as its factorization.

1323012013273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

The spelling of 1323012013273 in words is "one trillion, three hundred twenty-three billion, twelve million, thirteen thousand, two hundred seventy-three".