321430275313109 has 2 divisors, whose sum is σ = 321430275313110. Its totient is φ = 321430275313108.

The previous prime is 321430275313099. The next prime is 321430275313129. The reversal of 321430275313109 is 901313572034123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186251936182225 + 135178339130884 = 13647415^2 + 11626622^2 .

It is an emirp because it is prime and its reverse (901313572034123) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321430275313109 is a prime.

It is a super-2 number, since 2×321430275313109² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 321430275313109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321430275313129) 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 as a sum of consecutive naturals, namely, 160715137656554 + 160715137656555.

It is an arithmetic number, because the mean of its divisors is an integer number (160715137656555).

Almost surely, 2^{321430275313109} is an apocalyptic number.

It is an amenable number.

321430275313109 is a deficient number, since it is larger than the sum of its proper divisors (1).

321430275313109 is an equidigital number, since it uses as much as digits as its factorization.

321430275313109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 44.

The spelling of 321430275313109 in words is "three hundred twenty-one trillion, four hundred thirty billion, two hundred seventy-five million, three hundred thirteen thousand, one hundred nine".