108209173 has 2 divisors, whose sum is σ = 108209174. Its totient is φ = 108209172.

The previous prime is 108209159. The next prime is 108209191. The reversal of 108209173 is 371902801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108201604 + 7569 = 10402^2 + 87^2 .

It is a cyclic number.

It is not a de Polignac number, because 108209173 - 2²¹ = 106112021 is a prime.

It is equal to p_6206278 and since 108209173 and 6206278 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108209473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54104586 + 54104587.

It is an arithmetic number, because the mean of its divisors is an integer number (54104587).

Almost surely, 2^108209173 is an apocalyptic number.

It is an amenable number.

108209173 is a deficient number, since it is larger than the sum of its proper divisors (1).

108209173 is an equidigital number, since it uses as much as digits as its factorization.

108209173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 108209173 is about 10402.3638179022. The cubic root of 108209173 is about 476.5275630961.

The spelling of 108209173 in words is "one hundred eight million, two hundred nine thousand, one hundred seventy-three".