431221232 has 40 divisors (see below), whose sum is σ = 902275584. Its totient is φ = 198468864.

The previous prime is 431221223. The next prime is 431221249. The reversal of 431221232 is 232122134.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76958 + ... + 82370.

Almost surely, 2^431221232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431221232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (451137792).

431221232 is an abundant number, since it is smaller than the sum of its proper divisors (471054352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431221232 is a wasteful number, since it uses less digits than its factorization.

431221232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5817 (or 5811 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 431221232 is about 20765.8669936991. The cubic root of 431221232 is about 755.4981038335.

Adding to 431221232 its reverse (232122134), we get a palindrome (663343366).

The spelling of 431221232 in words is "four hundred thirty-one million, two hundred twenty-one thousand, two hundred thirty-two".