320513234500 has 96 divisors (see below), whose sum is σ = 726900894720. Its totient is φ = 123312291200.

The previous prime is 320513234399. The next prime is 320513234501. The reversal of 320513234500 is 5432315023.

It is not an unprimeable number, because it can be changed into a prime (320513234501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3771477 + ... + 3855523.

It is an arithmetic number, because the mean of its divisors is an integer number (7571884320).

Almost surely, 2^320513234500 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 320513234500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363450447360).

320513234500 is an abundant number, since it is smaller than the sum of its proper divisors (406387660220).

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

320513234500 is a wasteful number, since it uses less digits than its factorization.

320513234500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84358 (or 84346 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 320513234500 its reverse (5432315023), we get a palindrome (325945549523).

The spelling of 320513234500 in words is "three hundred twenty billion, five hundred thirteen million, two hundred thirty-four thousand, five hundred".