430531009 has 2 divisors, whose sum is σ = 430531010. Its totient is φ = 430531008.

The previous prime is 430530959. The next prime is 430531063. The reversal of 430531009 is 900135034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 415344400 + 15186609 = 20380^2 + 3897^2 .

It is a cyclic number.

It is not a de Polignac number, because 430531009 - 2²³ = 422142401 is a prime.

It is not a weakly prime, because it can be changed into another prime (430501009) 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, 215265504 + 215265505.

It is an arithmetic number, because the mean of its divisors is an integer number (215265505).

Almost surely, 2^430531009 is an apocalyptic number.

It is an amenable number.

430531009 is a deficient number, since it is larger than the sum of its proper divisors (1).

430531009 is an equidigital number, since it uses as much as digits as its factorization.

430531009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 430531009 is about 20749.2411668475. The cubic root of 430531009 is about 755.0947991427.

The spelling of 430531009 in words is "four hundred thirty million, five hundred thirty-one thousand, nine".