323042240440 has 32 divisors (see below), whose sum is σ = 726920550000. Its totient is φ = 129203472384.

The previous prime is 323042240341. The next prime is 323042240441. The reversal of 323042240440 is 44042240323.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 323042240399 and 323042240408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323042240441) 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, 25065 + ... + 804184.

Almost surely, 2^323042240440 is an apocalyptic number.

It is an amenable number.

323042240440 is an abundant number, since it is smaller than the sum of its proper divisors (403878309560).

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

323042240440 is a wasteful number, since it uses less digits than its factorization.

323042240440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838999 (or 838995 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 323042240440 its reverse (44042240323), we get a palindrome (367084480763).

The spelling of 323042240440 in words is "three hundred twenty-three billion, forty-two million, two hundred forty thousand, four hundred forty".