320203132221173 has 2 divisors, whose sum is σ = 320203132221174. Its totient is φ = 320203132221172.

The previous prime is 320203132221163. The next prime is 320203132221221. The reversal of 320203132221173 is 371122231302023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225185048031889 + 95018084189284 = 15006167^2 + 9747722^2 .

It is a cyclic number.

It is not a de Polignac number, because 320203132221173 - 2⁶ = 320203132221109 is a prime.

It is a super-3 number, since 3×320203132221173³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320203132221163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160101566110586 + 160101566110587.

It is an arithmetic number, because the mean of its divisors is an integer number (160101566110587).

Almost surely, 2^{320203132221173} is an apocalyptic number.

It is an amenable number.

320203132221173 is a deficient number, since it is larger than the sum of its proper divisors (1).

320203132221173 is an equidigital number, since it uses as much as digits as its factorization.

320203132221173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

Adding to 320203132221173 its reverse (371122231302023), we get a palindrome (691325363523196).

The spelling of 320203132221173 in words is "three hundred twenty trillion, two hundred three billion, one hundred thirty-two million, two hundred twenty-one thousand, one hundred seventy-three".