321430545439 has 2 divisors, whose sum is σ = 321430545440. Its totient is φ = 321430545438.

The previous prime is 321430545407. The next prime is 321430545481. The reversal of 321430545439 is 934545034123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321430545439 - 2⁵ = 321430545407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321430545395 and 321430545404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321430575439) 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, 160715272719 + 160715272720.

It is an arithmetic number, because the mean of its divisors is an integer number (160715272720).

Almost surely, 2^321430545439 is an apocalyptic number.

321430545439 is a deficient number, since it is larger than the sum of its proper divisors (1).

321430545439 is an equidigital number, since it uses as much as digits as its factorization.

321430545439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 321430545439 in words is "three hundred twenty-one billion, four hundred thirty million, five hundred forty-five thousand, four hundred thirty-nine".