432509321 has 4 divisors (see below), whose sum is σ = 438964752. Its totient is φ = 426053892.

The previous prime is 432509281. The next prime is 432509327. The reversal of 432509321 is 123905234.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 432509321 - 2¹⁸ = 432247177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (432509327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3227615 + ... + 3227748.

It is an arithmetic number, because the mean of its divisors is an integer number (109741188).

Almost surely, 2^432509321 is an apocalyptic number.

It is an amenable number.

432509321 is a deficient number, since it is larger than the sum of its proper divisors (6455431).

432509321 is an equidigital number, since it uses as much as digits as its factorization.

432509321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6455430.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 432509321 is about 20796.8584406395. The cubic root of 432509321 is about 756.2495985609.

The spelling of 432509321 in words is "four hundred thirty-two million, five hundred nine thousand, three hundred twenty-one".