321321312293 has 2 divisors, whose sum is σ = 321321312294. Its totient is φ = 321321312292.

The previous prime is 321321312217. The next prime is 321321312329. The reversal of 321321312293 is 392213123123.

Together with next prime (321321312329) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 321146623204 + 174689089 = 566698^2 + 13217^2 .

It is a cyclic number.

It is not a de Polignac number, because 321321312293 - 2²⁰ = 321320263717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321321312493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160660656146 + 160660656147.

It is an arithmetic number, because the mean of its divisors is an integer number (160660656147).

Almost surely, 2^321321312293 is an apocalyptic number.

It is an amenable number.

321321312293 is a deficient number, since it is larger than the sum of its proper divisors (1).

321321312293 is an equidigital number, since it uses as much as digits as its factorization.

321321312293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 32.

The spelling of 321321312293 in words is "three hundred twenty-one billion, three hundred twenty-one million, three hundred twelve thousand, two hundred ninety-three".