423311134434320 has 320 divisors, whose sum is σ = 1133323896913920. Its totient is φ = 145424321280000.

The previous prime is 423311134434319. The next prime is 423311134434329. The reversal of 423311134434320 is 23434431113324.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (423311134434329) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17158235585 + ... + 17158260255.

It is an arithmetic number, because the mean of its divisors is an integer number (3541637177856).

Almost surely, 2^{423311134434320} is an apocalyptic number.

423311134434320 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 423311134434320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (566661948456960).

423311134434320 is an abundant number, since it is smaller than the sum of its proper divisors (710012762479600).

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

423311134434320 is a wasteful number, since it uses less digits than its factorization.

423311134434320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27526 (or 27520 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 38.

Adding to 423311134434320 its reverse (23434431113324), we get a palindrome (446745565547644).

The spelling of 423311134434320 in words is "four hundred twenty-three trillion, three hundred eleven billion, one hundred thirty-four million, four hundred thirty-four thousand, three hundred twenty".