431120320 has 56 divisors (see below), whose sum is σ = 1028480544. Its totient is φ = 172133376.

The previous prime is 431120311. The next prime is 431120341. The reversal of 431120320 is 23021134.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 431120294 and 431120303.

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, 262542 + ... + 264178.

It is an arithmetic number, because the mean of its divisors is an integer number (18365724).

Almost surely, 2^431120320 is an apocalyptic number.

431120320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

431120320 is an abundant number, since it is smaller than the sum of its proper divisors (597360224).

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

431120320 is a wasteful number, since it uses less digits than its factorization.

431120320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477 (or 2467 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 431120320 is about 20763.4370950476. The cubic root of 431120320 is about 755.4391667445.

Adding to 431120320 its reverse (23021134), we get a palindrome (454141454).

The spelling of 431120320 in words is "four hundred thirty-one million, one hundred twenty thousand, three hundred twenty".