323305240 has 16 divisors (see below), whose sum is σ = 727436880. Its totient is φ = 129322080.

The previous prime is 323305219. The next prime is 323305267. The reversal of 323305240 is 42503323.

It is a super-2 number, since 2×323305240² = 209052556422915200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4041276 + ... + 4041355.

It is an arithmetic number, because the mean of its divisors is an integer number (45464805).

Almost surely, 2^323305240 is an apocalyptic number.

It is an amenable number.

323305240 is an abundant number, since it is smaller than the sum of its proper divisors (404131640).

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

323305240 is a wasteful number, since it uses less digits than its factorization.

323305240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8082642 (or 8082638 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 323305240 is about 17980.6907542508. The cubic root of 323305240 is about 686.3372672567.

Adding to 323305240 its reverse (42503323), we get a palindrome (365808563).

The spelling of 323305240 in words is "three hundred twenty-three million, three hundred five thousand, two hundred forty".