323121032322018 has 192 divisors, whose sum is σ = 803892731632128. Its totient is φ = 86028946698240.

The previous prime is 323121032321957. The next prime is 323121032322019. The reversal of 323121032322018 is 810223230121323.

It is a self number, because there is not a number n which added to its sum of digits gives 323121032322018.

It is not an unprimeable number, because it can be changed into a prime (323121032322019) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 219764055 + ... + 221229477.

It is an arithmetic number, because the mean of its divisors is an integer number (4186941310584).

Almost surely, 2^{323121032322018} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 323121032322018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (401946365816064).

323121032322018 is an abundant number, since it is smaller than the sum of its proper divisors (480771699310110).

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

323121032322018 is a wasteful number, since it uses less digits than its factorization.

323121032322018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465897 (or 1465890 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The spelling of 323121032322018 in words is "three hundred twenty-three trillion, one hundred twenty-one billion, thirty-two million, three hundred twenty-two thousand, eighteen".