432321231 has 16 divisors (see below), whose sum is σ = 607213440. Its totient is φ = 272844000.

The previous prime is 432321221. The next prime is 432321233. The reversal of 432321231 is 132123234.

It is not a de Polignac number, because 432321231 - 2⁶ = 432321167 is a prime.

It is a super-2 number, since 2×432321231² = 373803293546710722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 432321198 and 432321207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (432321233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131356 + ... + 134606.

It is an arithmetic number, because the mean of its divisors is an integer number (37950840).

Almost surely, 2^432321231 is an apocalyptic number.

432321231 is a deficient number, since it is larger than the sum of its proper divisors (174892209).

432321231 is a wasteful number, since it uses less digits than its factorization.

432321231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5606.

The product of its digits is 864, while the sum is 21.

The square root of 432321231 is about 20792.3358716619. The cubic root of 432321231 is about 756.1399565219.

Adding to 432321231 its reverse (132123234), we get a palindrome (564444465).

The spelling of 432321231 in words is "four hundred thirty-two million, three hundred twenty-one thousand, two hundred thirty-one".