323220340 has 24 divisors (see below), whose sum is σ = 679101192. Its totient is φ = 129223680.

The previous prime is 323220319. The next prime is 323220413. The reversal of 323220340 is 43022323.

It can be written as a sum of positive squares in 4 ways, for example, as 30536676 + 292683664 = 5526^2 + 17108^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73072 + ... + 77368.

It is an arithmetic number, because the mean of its divisors is an integer number (28295883).

Almost surely, 2^323220340 is an apocalyptic number.

It is an amenable number.

323220340 is an abundant number, since it is smaller than the sum of its proper divisors (355880852).

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

323220340 is a wasteful number, since it uses less digits than its factorization.

323220340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8067 (or 8065 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 323220340 is about 17978.3297333206. The cubic root of 323220340 is about 686.2771845772.

Adding to 323220340 its reverse (43022323), we get a palindrome (366242663).

The spelling of 323220340 in words is "three hundred twenty-three million, two hundred twenty thousand, three hundred forty".