323220353240 has 32 divisors (see below), whose sum is σ = 727348734000. Its totient is φ = 129269841024.

The previous prime is 323220353233. The next prime is 323220353263. The reversal of 323220353240 is 42353022323.

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, 283970 + ... + 852689.

Almost surely, 2^323220353240 is an apocalyptic number.

It is an amenable number.

323220353240 is an abundant number, since it is smaller than the sum of its proper divisors (404128380760).

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

323220353240 is a wasteful number, since it uses less digits than its factorization.

323220353240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143779 (or 1143775 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 29.

Adding to 323220353240 its reverse (42353022323), we get a palindrome (365573375563).

The spelling of 323220353240 in words is "three hundred twenty-three billion, two hundred twenty million, three hundred fifty-three thousand, two hundred forty".