431032420 has 144 divisors (see below), whose sum is σ = 1184053248. Its totient is φ = 130394880.

The previous prime is 431032417. The next prime is 431032447. The reversal of 431032420 is 24230134.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 292285 + ... + 293755.

It is an arithmetic number, because the mean of its divisors is an integer number (8222592).

Almost surely, 2^431032420 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 431032420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (592026624).

431032420 is an abundant number, since it is smaller than the sum of its proper divisors (753020828).

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

431032420 is a wasteful number, since it uses less digits than its factorization.

431032420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530 (or 1521 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 431032420 is about 20761.3202855695. The cubic root of 431032420 is about 755.3878217463.

Adding to 431032420 its reverse (24230134), we get a palindrome (455262554).

The spelling of 431032420 in words is "four hundred thirty-one million, thirty-two thousand, four hundred twenty".