320501350129 has 2 divisors, whose sum is σ = 320501350130. Its totient is φ = 320501350128.

The previous prime is 320501350121. The next prime is 320501350159. The reversal of 320501350129 is 921053105023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304122469729 + 16378880400 = 551473^2 + 127980^2 .

It is a cyclic number.

It is not a de Polignac number, because 320501350129 - 2³ = 320501350121 is a prime.

It is a super-2 number, since 2×320501350129² (a number of 24 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 320501350129.

It is not a weakly prime, because it can be changed into another prime (320501350121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160250675064 + 160250675065.

It is an arithmetic number, because the mean of its divisors is an integer number (160250675065).

Almost surely, 2^320501350129 is an apocalyptic number.

It is an amenable number.

320501350129 is a deficient number, since it is larger than the sum of its proper divisors (1).

320501350129 is an equidigital number, since it uses as much as digits as its factorization.

320501350129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 31.

The spelling of 320501350129 in words is "three hundred twenty billion, five hundred one million, three hundred fifty thousand, one hundred twenty-nine".