331020120173 has 2 divisors, whose sum is σ = 331020120174. Its totient is φ = 331020120172.

The previous prime is 331020120161. The next prime is 331020120227. The reversal of 331020120173 is 371021020133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224276122084 + 106743998089 = 473578^2 + 326717^2 .

It is a cyclic number.

It is not a de Polignac number, because 331020120173 - 2¹⁴ = 331020103789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331020120133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165510060086 + 165510060087.

It is an arithmetic number, because the mean of its divisors is an integer number (165510060087).

Almost surely, 2^331020120173 is an apocalyptic number.

It is an amenable number.

331020120173 is a deficient number, since it is larger than the sum of its proper divisors (1).

331020120173 is an equidigital number, since it uses as much as digits as its factorization.

331020120173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

The spelling of 331020120173 in words is "three hundred thirty-one billion, twenty million, one hundred twenty thousand, one hundred seventy-three".