423213230320 has 80 divisors (see below), whose sum is σ = 990296616960. Its totient is φ = 168197871872.

The previous prime is 423213230309. The next prime is 423213230327. The reversal of 423213230320 is 23032312324.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423213230327) 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, 38457939 + ... + 38468941.

It is an arithmetic number, because the mean of its divisors is an integer number (12378707712).

Almost surely, 2^423213230320 is an apocalyptic number.

423213230320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423213230320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495148308480).

423213230320 is an abundant number, since it is smaller than the sum of its proper divisors (567083386640).

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

423213230320 is a wasteful number, since it uses less digits than its factorization.

423213230320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14062 (or 14056 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 423213230320 its reverse (23032312324), we get a palindrome (446245542644).

The spelling of 423213230320 in words is "four hundred twenty-three billion, two hundred thirteen million, two hundred thirty thousand, three hundred twenty".