320773323109 has 2 divisors, whose sum is σ = 320773323110. Its totient is φ = 320773323108.

The previous prime is 320773323023. The next prime is 320773323131. The reversal of 320773323109 is 901323377023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 254404228225 + 66369094884 = 504385^2 + 257622^2 .

It is a cyclic number.

It is not a de Polignac number, because 320773323109 - 2⁷ = 320773322981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320773323509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160386661554 + 160386661555.

It is an arithmetic number, because the mean of its divisors is an integer number (160386661555).

Almost surely, 2^320773323109 is an apocalyptic number.

It is an amenable number.

320773323109 is a deficient number, since it is larger than the sum of its proper divisors (1).

320773323109 is an equidigital number, since it uses as much as digits as its factorization.

320773323109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142884, while the sum is 40.

The spelling of 320773323109 in words is "three hundred twenty billion, seven hundred seventy-three million, three hundred twenty-three thousand, one hundred nine".