423505171 has 2 divisors, whose sum is σ = 423505172. Its totient is φ = 423505170.

The previous prime is 423505163. The next prime is 423505177. The reversal of 423505171 is 171505324.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423505171 - 2³ = 423505163 is a prime.

It is not a weakly prime, because it can be changed into another prime (423505177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211752585 + 211752586.

It is an arithmetic number, because the mean of its divisors is an integer number (211752586).

Almost surely, 2^423505171 is an apocalyptic number.

423505171 is a deficient number, since it is larger than the sum of its proper divisors (1).

423505171 is an equidigital number, since it uses as much as digits as its factorization.

423505171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 423505171 is about 20579.2412639533. The cubic root of 423505171 is about 750.9647856453.

The spelling of 423505171 in words is "four hundred twenty-three million, five hundred five thousand, one hundred seventy-one".