321031545349 has 2 divisors, whose sum is σ = 321031545350. Its totient is φ = 321031545348.

The previous prime is 321031545319. The next prime is 321031545427. The reversal of 321031545349 is 943545130123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163357430625 + 157674114724 = 404175^2 + 397082^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321031545349 is a prime.

It is a super-2 number, since 2×321031545349² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321031545319) 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, 160515772674 + 160515772675.

It is an arithmetic number, because the mean of its divisors is an integer number (160515772675).

Almost surely, 2^321031545349 is an apocalyptic number.

It is an amenable number.

321031545349 is a deficient number, since it is larger than the sum of its proper divisors (1).

321031545349 is an equidigital number, since it uses as much as digits as its factorization.

321031545349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 321031545349 in words is "three hundred twenty-one billion, thirty-one million, five hundred forty-five thousand, three hundred forty-nine".