323278821376 has 96 divisors (see below), whose sum is σ = 739507860000. Its totient is φ = 138404560896.

The previous prime is 323278821353. The next prime is 323278821377. The reversal of 323278821376 is 673128872323.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323278821377) 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, 14453850 + ... + 14476198.

It is an arithmetic number, because the mean of its divisors is an integer number (7703206875).

Almost surely, 2^323278821376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 323278821376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369753930000).

323278821376 is an abundant number, since it is smaller than the sum of its proper divisors (416229038624).

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

323278821376 is a wasteful number, since it uses less digits than its factorization.

323278821376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23387 (or 23367 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 52.

The spelling of 323278821376 in words is "three hundred twenty-three billion, two hundred seventy-eight million, eight hundred twenty-one thousand, three hundred seventy-six".