431503420 has 24 divisors (see below), whose sum is σ = 912777264. Its totient is φ = 171340416.

The previous prime is 431503351. The next prime is 431503421. The reversal of 431503420 is 24305134.

It is a junction number, because it is equal to n+sod(n) for n = 431503391 and 431503400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431503421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76002 + ... + 81481.

It is an arithmetic number, because the mean of its divisors is an integer number (38032386).

Almost surely, 2^431503420 is an apocalyptic number.

It is an amenable number.

431503420 is an abundant number, since it is smaller than the sum of its proper divisors (481273844).

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

431503420 is a wasteful number, since it uses less digits than its factorization.

431503420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157629 (or 157627 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 431503420 is about 20772.6603977440. The cubic root of 431503420 is about 755.6628653651.

Adding to 431503420 its reverse (24305134), we get a palindrome (455808554).

The spelling of 431503420 in words is "four hundred thirty-one million, five hundred three thousand, four hundred twenty".