322320319261 has 2 divisors, whose sum is σ = 322320319262. Its totient is φ = 322320319260.

The previous prime is 322320319259. The next prime is 322320319313. The reversal of 322320319261 is 162913023223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198141607161 + 124178712100 = 445131^2 + 352390^2 .

It is a cyclic number.

It is not a de Polignac number, because 322320319261 - 2¹ = 322320319259 is a prime.

It is a super-2 number, since 2×322320319261² (a number of 24 digits) contains 22 as substring.

Together with 322320319259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (322320319961) 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, 161160159630 + 161160159631.

It is an arithmetic number, because the mean of its divisors is an integer number (161160159631).

Almost surely, 2^322320319261 is an apocalyptic number.

It is an amenable number.

322320319261 is a deficient number, since it is larger than the sum of its proper divisors (1).

322320319261 is an equidigital number, since it uses as much as digits as its factorization.

322320319261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 34.

The spelling of 322320319261 in words is "three hundred twenty-two billion, three hundred twenty million, three hundred nineteen thousand, two hundred sixty-one".