323431506 has 12 divisors (see below), whose sum is σ = 700768302. Its totient is φ = 107810496.

The previous prime is 323431499. The next prime is 323431529. The reversal of 323431506 is 605134323.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 318301281 + 5130225 = 17841^2 + 2265^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 323431506.

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 5 ways as a sum of consecutive naturals, for example, 8984191 + ... + 8984226.

Almost surely, 2^323431506 is an apocalyptic number.

323431506 is an abundant number, since it is smaller than the sum of its proper divisors (377336796).

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

323431506 is a wasteful number, since it uses less digits than its factorization.

323431506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17968425 (or 17968422 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 323431506 is about 17984.2015669309. The cubic root of 323431506 is about 686.4266046912.

Adding to 323431506 its reverse (605134323), we get a palindrome (928565829).

The spelling of 323431506 in words is "three hundred twenty-three million, four hundred thirty-one thousand, five hundred six".