321434434129 has 2 divisors, whose sum is σ = 321434434130. Its totient is φ = 321434434128.

The previous prime is 321434434091. The next prime is 321434434159. The reversal of 321434434129 is 921434434123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222451835904 + 98982598225 = 471648^2 + 314615^2 .

It is a cyclic number.

It is not a de Polignac number, because 321434434129 - 2¹³ = 321434425937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321434434091 and 321434434100.

It is not a weakly prime, because it can be changed into another prime (321434434159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160717217064 + 160717217065.

It is an arithmetic number, because the mean of its divisors is an integer number (160717217065).

Almost surely, 2^321434434129 is an apocalyptic number.

It is an amenable number.

321434434129 is a deficient number, since it is larger than the sum of its proper divisors (1).

321434434129 is an equidigital number, since it uses as much as digits as its factorization.

321434434129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 40.

The spelling of 321434434129 in words is "three hundred twenty-one billion, four hundred thirty-four million, four hundred thirty-four thousand, one hundred twenty-nine".