431220224 has 40 divisors (see below), whose sum is σ = 875786208. Its totient is φ = 212060160.

The previous prime is 431220217. The next prime is 431220239. The reversal of 431220224 is 422022134.

It is a super-2 number, since 2×431220224² = 371901763173220352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 431220196 and 431220205.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 24329 + ... + 38135.

Almost surely, 2^431220224 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 431220224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (437893104).

431220224 is an abundant number, since it is smaller than the sum of its proper divisors (444565984).

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

431220224 is an equidigital number, since it uses as much as digits as its factorization.

431220224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13886 (or 13870 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 431220224 is about 20765.8427230874. The cubic root of 431220224 is about 755.4975151622.

Adding to 431220224 its reverse (422022134), we get a palindrome (853242358).

The spelling of 431220224 in words is "four hundred thirty-one million, two hundred twenty thousand, two hundred twenty-four".