323207040 has 256 divisors, whose sum is σ = 1159764480. Its totient is φ = 75964416.

The previous prime is 323207033. The next prime is 323207051. The reversal of 323207040 is 40702323.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 323206998 and 323207016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 573799 + ... + 574361.

It is an arithmetic number, because the mean of its divisors is an integer number (4530330).

Almost surely, 2^323207040 is an apocalyptic number.

323207040 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 323207040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (579882240).

323207040 is an abundant number, since it is smaller than the sum of its proper divisors (836557440).

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

323207040 is a wasteful number, since it uses less digits than its factorization.

323207040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 323207040 is about 17977.9598397593. The cubic root of 323207040 is about 686.2677713786.

Adding to 323207040 its reverse (40702323), we get a palindrome (363909363).

The spelling of 323207040 in words is "three hundred twenty-three million, two hundred seven thousand, forty".