323019640 has 16 divisors (see below), whose sum is σ = 726794280. Its totient is φ = 129207840.

The previous prime is 323019637. The next prime is 323019679. The reversal of 323019640 is 46910323.

It is a junction number, because it is equal to n+sod(n) for n = 323019599 and 323019608.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 4037706 + ... + 4037785.

Almost surely, 2^323019640 is an apocalyptic number.

It is an amenable number.

323019640 is an abundant number, since it is smaller than the sum of its proper divisors (403774640).

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

323019640 is a wasteful number, since it uses less digits than its factorization.

323019640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8075502 (or 8075498 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 323019640 is about 17972.7471467219. The cubic root of 323019640 is about 686.1351098249.

Adding to 323019640 its reverse (46910323), we get a palindrome (369929963).

The spelling of 323019640 in words is "three hundred twenty-three million, nineteen thousand, six hundred forty".