423452191 has 2 divisors, whose sum is σ = 423452192. Its totient is φ = 423452190.

The previous prime is 423452153. The next prime is 423452203. The reversal of 423452191 is 191254324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423452191 - 2⁷ = 423452063 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423452131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211726095 + 211726096.

It is an arithmetic number, because the mean of its divisors is an integer number (211726096).

Almost surely, 2^423452191 is an apocalyptic number.

423452191 is a deficient number, since it is larger than the sum of its proper divisors (1).

423452191 is an equidigital number, since it uses as much as digits as its factorization.

423452191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 423452191 is about 20577.9540042250. The cubic root of 423452191 is about 750.9334694015.

The spelling of 423452191 in words is "four hundred twenty-three million, four hundred fifty-two thousand, one hundred ninety-one".