320123000 has 64 divisors (see below), whose sum is σ = 754228800. Its totient is φ = 127171200.

The previous prime is 320122981. The next prime is 320123017. The reversal of 320123000 is 321023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155981 + ... + 158019.

It is an arithmetic number, because the mean of its divisors is an integer number (11784825).

Almost surely, 2^320123000 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 320123000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (377114400).

320123000 is an abundant number, since it is smaller than the sum of its proper divisors (434105800).

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

320123000 is a wasteful number, since it uses less digits than its factorization.

320123000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217 (or 2203 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 320123000 is about 17891.9814442113. The cubic root of 320123000 is about 684.0780037119.

Adding to 320123000 its reverse (321023), we get a palindrome (320444023).

The spelling of 320123000 in words is "three hundred twenty million, one hundred twenty-three thousand".