321424309999873 has 2 divisors, whose sum is σ = 321424309999874. Its totient is φ = 321424309999872.

The previous prime is 321424309999847. The next prime is 321424310000081. The reversal of 321424309999873 is 378999903424123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261607883444209 + 59816426555664 = 16174297^2 + 7734108^2 .

It is a cyclic number.

It is not a de Polignac number, because 321424309999873 - 2⁴¹ = 319225286744321 is a prime.

It is a super-2 number, since 2×321424309999873² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321424309999796 and 321424309999805.

It is not a weakly prime, because it can be changed into another prime (321424304999873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160712154999936 + 160712154999937.

It is an arithmetic number, because the mean of its divisors is an integer number (160712154999937).

Almost surely, 2^{321424309999873} is an apocalyptic number.

It is an amenable number.

321424309999873 is a deficient number, since it is larger than the sum of its proper divisors (1).

321424309999873 is an equidigital number, since it uses as much as digits as its factorization.

321424309999873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 634894848, while the sum is 73.

The spelling of 321424309999873 in words is "three hundred twenty-one trillion, four hundred twenty-four billion, three hundred nine million, nine hundred ninety-nine thousand, eight hundred seventy-three".