321340000 has 60 divisors (see below), whose sum is σ = 790593804. Its totient is φ = 128528000.

The previous prime is 321339971. The next prime is 321340003. The reversal of 321340000 is 43123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321340003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 11967 + ... + 28033.

Almost surely, 2^321340000 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 321340000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395296902).

321340000 is an abundant number, since it is smaller than the sum of its proper divisors (469253804).

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

321340000 is an equidigital number, since it uses as much as digits as its factorization.

321340000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16097 (or 16074 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 321340000 is about 17925.9588307014. The cubic root of 321340000 is about 684.9437856794.

Adding to 321340000 its reverse (43123), we get a palindrome (321383123).

The spelling of 321340000 in words is "three hundred twenty-one million, three hundred forty thousand".