323504240 has 40 divisors (see below), whose sum is σ = 753099120. Its totient is φ = 129238016.

The previous prime is 323504221. The next prime is 323504249. The reversal of 323504240 is 42405323.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323504249) 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, 76091 + ... + 80229.

It is an arithmetic number, because the mean of its divisors is an integer number (18827478).

Almost surely, 2^323504240 is an apocalyptic number.

It is an amenable number.

323504240 is an abundant number, since it is smaller than the sum of its proper divisors (429594880).

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

323504240 is a wasteful number, since it uses less digits than its factorization.

323504240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129 (or 5123 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 323504240 is about 17986.2236169797. The cubic root of 323504240 is about 686.4780558843.

Adding to 323504240 its reverse (42405323), we get a palindrome (365909563).

The spelling of 323504240 in words is "three hundred twenty-three million, five hundred four thousand, two hundred forty".