320321300129 has 2 divisors, whose sum is σ = 320321300130. Its totient is φ = 320321300128.

The previous prime is 320321300119. The next prime is 320321300137. The reversal of 320321300129 is 921003123023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 260615355025 + 59705945104 = 510505^2 + 244348^2 .

It is a cyclic number.

It is not a de Polignac number, because 320321300129 - 2²⁰ = 320320251553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 320321300098 and 320321300107.

It is not a weakly prime, because it can be changed into another prime (320321300119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160160650064 + 160160650065.

It is an arithmetic number, because the mean of its divisors is an integer number (160160650065).

Almost surely, 2^320321300129 is an apocalyptic number.

It is an amenable number.

320321300129 is a deficient number, since it is larger than the sum of its proper divisors (1).

320321300129 is an equidigital number, since it uses as much as digits as its factorization.

320321300129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 320321300129 in words is "three hundred twenty billion, three hundred twenty-one million, three hundred thousand, one hundred twenty-nine".