432523021 has 4 divisors (see below), whose sum is σ = 494312032. Its totient is φ = 370734012.

The previous prime is 432522977. The next prime is 432523037. The reversal of 432523021 is 120325234.

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 432523021 - 2¹¹ = 432520973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 432522983 and 432523001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (432523621) 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, 30894495 + ... + 30894508.

It is an arithmetic number, because the mean of its divisors is an integer number (123578008).

Almost surely, 2^432523021 is an apocalyptic number.

It is an amenable number.

432523021 is a deficient number, since it is larger than the sum of its proper divisors (61789011).

432523021 is an equidigital number, since it uses as much as digits as its factorization.

432523021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61789010.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 432523021 is about 20797.1878147023. The cubic root of 432523021 is about 756.2575833677.

Adding to 432523021 its reverse (120325234), we get a palindrome (552848255).

The spelling of 432523021 in words is "four hundred thirty-two million, five hundred twenty-three thousand, twenty-one".