423201091 has 2 divisors, whose sum is σ = 423201092. Its totient is φ = 423201090.

The previous prime is 423201073. The next prime is 423201167. The reversal of 423201091 is 190102324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423201091 - 2⁵ = 423201059 is a prime.

It is not a weakly prime, because it can be changed into another prime (423201071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211600545 + 211600546.

It is an arithmetic number, because the mean of its divisors is an integer number (211600546).

Almost surely, 2^423201091 is an apocalyptic number.

423201091 is a deficient number, since it is larger than the sum of its proper divisors (1).

423201091 is an equidigital number, since it uses as much as digits as its factorization.

423201091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 423201091 is about 20571.8519098306. The cubic root of 423201091 is about 750.7850097633.

The spelling of 423201091 in words is "four hundred twenty-three million, two hundred one thousand, ninety-one".