43230091 has 2 divisors, whose sum is σ = 43230092. Its totient is φ = 43230090.

The previous prime is 43230079. The next prime is 43230101. The reversal of 43230091 is 19003234.

43230091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43230091 - 2¹⁷ = 43099019 is a prime.

It is not a weakly prime, because it can be changed into another prime (43230001) 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, 21615045 + 21615046.

It is an arithmetic number, because the mean of its divisors is an integer number (21615046).

Almost surely, 2^43230091 is an apocalyptic number.

43230091 is a deficient number, since it is larger than the sum of its proper divisors (1).

43230091 is an equidigital number, since it uses as much as digits as its factorization.

43230091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 43230091 is about 6574.9593915096. The cubic root of 43230091 is about 350.9635787676.

The spelling of 43230091 in words is "forty-three million, two hundred thirty thousand, ninety-one".