431316320 has 48 divisors (see below), whose sum is σ = 1029526848. Its totient is φ = 170741760.

The previous prime is 431316317. The next prime is 431316329. The reversal of 431316320 is 23613134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431316329) 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, 1625 + ... + 29415.

It is an arithmetic number, because the mean of its divisors is an integer number (21448476).

Almost surely, 2^431316320 is an apocalyptic number.

431316320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431316320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (514763424).

431316320 is an abundant number, since it is smaller than the sum of its proper divisors (598210528).

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

431316320 is a wasteful number, since it uses less digits than its factorization.

431316320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27903 (or 27895 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 431316320 is about 20768.1563938641. The cubic root of 431316320 is about 755.5536310344.

Adding to 431316320 its reverse (23613134), we get a palindrome (454929454).

The spelling of 431316320 in words is "four hundred thirty-one million, three hundred sixteen thousand, three hundred twenty".