431220 has 24 divisors (see below), whose sum is σ = 1207584. Its totient is φ = 114976.

The previous prime is 431219. The next prime is 431237. The reversal of 431220 is 22134.

431220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 431196 and 431205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3534 + ... + 3653.

It is an arithmetic number, because the mean of its divisors is an integer number (50316).

2⁴³¹²²⁰ is an apocalyptic number.

It is an amenable number.

431220 is an abundant number, since it is smaller than the sum of its proper divisors (776364).

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

431220 is a wasteful number, since it uses less digits than its factorization.

431220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7199 (or 7197 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 431220 is about 656.6734348213. The cubic root of 431220 is about 75.5497384346.

Adding to 431220 its reverse (22134), we get a palindrome (453354).

The spelling of 431220 in words is "four hundred thirty-one thousand, two hundred twenty".