431204420 has 24 divisors (see below), whose sum is σ = 934741248. Its totient is φ = 166917600.

The previous prime is 431204419. The next prime is 431204443. The reversal of 431204420 is 24402134.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 431204392 and 431204401.

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 7 ways as a sum of consecutive naturals, for example, 347126 + ... + 348365.

It is an arithmetic number, because the mean of its divisors is an integer number (38947552).

Almost surely, 2^431204420 is an apocalyptic number.

It is an amenable number.

431204420 is an abundant number, since it is smaller than the sum of its proper divisors (503536828).

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

431204420 is a wasteful number, since it uses less digits than its factorization.

431204420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695531 (or 695529 counting only the distinct ones).

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

The square root of 431204420 is about 20765.4621908591. The cubic root of 431204420 is about 755.4882855173.

Adding to 431204420 its reverse (24402134), we get a palindrome (455606554).

The spelling of 431204420 in words is "four hundred thirty-one million, two hundred four thousand, four hundred twenty".