321312312120313 has 4 divisors (see below), whose sum is σ = 321319393116660. Its totient is φ = 321305231123968.

The previous prime is 321312312120281. The next prime is 321312312120343. The reversal of 321312312120313 is 313021213213123.

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

It can be written as a sum of positive squares in 2 ways, for example, as 197753681250064 + 123558630870249 = 14062492^2 + 11115693^2 .

It is a cyclic number.

It is not a de Polignac number, because 321312312120313 - 2⁵ = 321312312120281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321312312120343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3540430108 + ... + 3540520861.

It is an arithmetic number, because the mean of its divisors is an integer number (80329848279165).

Almost surely, 2^{321312312120313} is an apocalyptic number.

It is an amenable number.

321312312120313 is a deficient number, since it is larger than the sum of its proper divisors (7080996347).

321312312120313 is an equidigital number, since it uses as much as digits as its factorization.

321312312120313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7080996346.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 321312312120313 its reverse (313021213213123), we get a palindrome (634333525333436).

The spelling of 321312312120313 in words is "three hundred twenty-one trillion, three hundred twelve billion, three hundred twelve million, one hundred twenty thousand, three hundred thirteen".