320231121104000 has 128 divisors (see below), whose sum is σ = 796225672569600. Its totient is φ = 128084235648000.

The previous prime is 320231121103987. The next prime is 320231121104003. The reversal of 320231121104000 is 401121132023.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (320231121104003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252022271 + ... + 253289729.

It is an arithmetic number, because the mean of its divisors is an integer number (6220513066950).

Almost surely, 2^{320231121104000} 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 320231121104000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398112836284800).

320231121104000 is an abundant number, since it is smaller than the sum of its proper divisors (475994551465600).

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

320231121104000 is a wasteful number, since it uses less digits than its factorization.

320231121104000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283279 (or 1283257 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 320231121104000 its reverse (401121132023), we get a palindrome (320632242236023).

The spelling of 320231121104000 in words is "three hundred twenty trillion, two hundred thirty-one billion, one hundred twenty-one million, one hundred four thousand".