423172271 has 2 divisors, whose sum is σ = 423172272. Its totient is φ = 423172270.

The previous prime is 423172213. The next prime is 423172273. The reversal of 423172271 is 172271324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423172271 - 2¹⁰ = 423171247 is a prime.

Together with 423172273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423172273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211586135 + 211586136.

It is an arithmetic number, because the mean of its divisors is an integer number (211586136).

Almost surely, 2^423172271 is an apocalyptic number.

423172271 is a deficient number, since it is larger than the sum of its proper divisors (1).

423172271 is an equidigital number, since it uses as much as digits as its factorization.

423172271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704, while the sum is 29.

The square root of 423172271 is about 20571.1514262085. The cubic root of 423172271 is about 750.7679665533.

The spelling of 423172271 in words is "four hundred twenty-three million, one hundred seventy-two thousand, two hundred seventy-one".