431321312 has 48 divisors (see below), whose sum is σ = 872925984. Its totient is φ = 209664000.

The previous prime is 431321311. The next prime is 431321327. The reversal of 431321312 is 213123134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431321311) 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, 683237 + ... + 683867.

It is an arithmetic number, because the mean of its divisors is an integer number (18185958).

Almost surely, 2^431321312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431321312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (436462992).

431321312 is an abundant number, since it is smaller than the sum of its proper divisors (441604672).

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

431321312 is a wasteful number, since it uses less digits than its factorization.

431321312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203 (or 1195 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 431321312 is about 20768.2765775112. The cubic root of 431321312 is about 755.5565459169.

Adding to 431321312 its reverse (213123134), we get a palindrome (644444446).

It can be divided in two parts, 43132 and 1312, that added together give a palindrome (44444).

The spelling of 431321312 in words is "four hundred thirty-one million, three hundred twenty-one thousand, three hundred twelve".