320321010197 has 2 divisors, whose sum is σ = 320321010198. Its totient is φ = 320321010196.

The previous prime is 320321010187. The next prime is 320321010227. The reversal of 320321010197 is 791010123023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320311853521 + 9156676 = 565961^2 + 3026^2 .

It is a cyclic number.

It is not a de Polignac number, because 320321010197 - 2¹² = 320321006101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320321010187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160160505098 + 160160505099.

It is an arithmetic number, because the mean of its divisors is an integer number (160160505099).

Almost surely, 2^320321010197 is an apocalyptic number.

It is an amenable number.

320321010197 is a deficient number, since it is larger than the sum of its proper divisors (1).

320321010197 is an equidigital number, since it uses as much as digits as its factorization.

320321010197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 29.

The spelling of 320321010197 in words is "three hundred twenty billion, three hundred twenty-one million, ten thousand, one hundred ninety-seven".