432321217 has 2 divisors, whose sum is σ = 432321218. Its totient is φ = 432321216.

The previous prime is 432321167. The next prime is 432321221. The reversal of 432321217 is 712123234.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314033841 + 118287376 = 17721^2 + 10876^2 .

It is a cyclic number.

It is not a de Polignac number, because 432321217 - 2⁷ = 432321089 is a prime.

It is a super-2 number, since 2×432321217² = 373803269336722178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 432321191 and 432321200.

It is not a weakly prime, because it can be changed into another prime (432321247) 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, 216160608 + 216160609.

It is an arithmetic number, because the mean of its divisors is an integer number (216160609).

Almost surely, 2^432321217 is an apocalyptic number.

It is an amenable number.

432321217 is a deficient number, since it is larger than the sum of its proper divisors (1).

432321217 is an equidigital number, since it uses as much as digits as its factorization.

432321217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 25.

The square root of 432321217 is about 20792.3355349994. The cubic root of 432321217 is about 756.1399483598.

The spelling of 432321217 in words is "four hundred thirty-two million, three hundred twenty-one thousand, two hundred seventeen".