321213220313323 has 4 divisors (see below), whose sum is σ = 345921929568208. Its totient is φ = 296504511058440.

The previous prime is 321213220313317. The next prime is 321213220313327. The reversal of 321213220313323 is 323313022312123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 321213220313323 - 2²¹ = 321213218216171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321213220313327) 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 in 3 ways as a sum of consecutive naturals, for example, 12354354627423 + ... + 12354354627448.

It is an arithmetic number, because the mean of its divisors is an integer number (86480482392052).

Almost surely, 2^{321213220313323} is an apocalyptic number.

321213220313323 is a deficient number, since it is larger than the sum of its proper divisors (24708709254885).

321213220313323 is a wasteful number, since it uses less digits than its factorization.

321213220313323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24708709254884.

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 321213220313323 its reverse (323313022312123), we get a palindrome (644526242625446).

The spelling of 321213220313323 in words is "three hundred twenty-one trillion, two hundred thirteen billion, two hundred twenty million, three hundred thirteen thousand, three hundred twenty-three".