320233131330 has 128 divisors (see below), whose sum is σ = 913257607680. Its totient is φ = 70313134080.

The previous prime is 320233131299. The next prime is 320233131373. The reversal of 320233131330 is 33131332023.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 320233131330.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1066270 + ... + 1333190.

It is an arithmetic number, because the mean of its divisors is an integer number (7134825060).

Almost surely, 2^320233131330 is an apocalyptic number.

320233131330 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 320233131330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456628803840).

320233131330 is an abundant number, since it is smaller than the sum of its proper divisors (593024476350).

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

320233131330 is a wasteful number, since it uses less digits than its factorization.

320233131330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267164.

The product of its (nonzero) digits is 2916, while the sum is 24.

Adding to 320233131330 its reverse (33131332023), we get a palindrome (353364463353).

The spelling of 320233131330 in words is "three hundred twenty billion, two hundred thirty-three million, one hundred thirty-one thousand, three hundred thirty".