323831040 has 216 divisors, whose sum is σ = 1122156000. Its totient is φ = 79552512.

The previous prime is 323831029. The next prime is 323831047. The reversal of 323831040 is 40138323.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 323831040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323831047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 648711 + ... + 649209.

Almost surely, 2^323831040 is an apocalyptic number.

323831040 is a gapful number since it is divisible by the number (30) 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 323831040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (561078000).

323831040 is an abundant number, since it is smaller than the sum of its proper divisors (798324960).

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

323831040 is a wasteful number, since it uses less digits than its factorization.

323831040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 323831040 is about 17995.3060546355. The cubic root of 323831040 is about 686.7091353170.

Adding to 323831040 its reverse (40138323), we get a palindrome (363969363).

The spelling of 323831040 in words is "three hundred twenty-three million, eight hundred thirty-one thousand, forty".