101806232173 has 2 divisors, whose sum is σ = 101806232174. Its totient is φ = 101806232172.

The previous prime is 101806232081. The next prime is 101806232189. The reversal of 101806232173 is 371232608101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100117186569 + 1689045604 = 316413^2 + 41098^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101806232173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101806236173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50903116086 + 50903116087.

It is an arithmetic number, because the mean of its divisors is an integer number (50903116087).

Almost surely, 2^101806232173 is an apocalyptic number.

It is an amenable number.

101806232173 is a deficient number, since it is larger than the sum of its proper divisors (1).

101806232173 is an equidigital number, since it uses as much as digits as its factorization.

101806232173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 101806232173 in words is "one hundred one billion, eight hundred six million, two hundred thirty-two thousand, one hundred seventy-three".