4231000091 has 2 divisors, whose sum is σ = 4231000092. Its totient is φ = 4231000090.

The previous prime is 4231000073. The next prime is 4231000159. The reversal of 4231000091 is 1900001324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4231000091 - 2¹⁰ = 4230999067 is a prime.

It is not a weakly prime, because it can be changed into another prime (4231000021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2115500045 + 2115500046.

It is an arithmetic number, because the mean of its divisors is an integer number (2115500046).

Almost surely, 2^4231000091 is an apocalyptic number.

4231000091 is a deficient number, since it is larger than the sum of its proper divisors (1).

4231000091 is an equidigital number, since it uses as much as digits as its factorization.

4231000091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 4231000091 is about 65046.1381713011. The cubic root of 4231000091 is about 1617.3884777951.

The spelling of 4231000091 in words is "four billion, two hundred thirty-one million, ninety-one", and thus it is an aban number.