423221032344 has 128 divisors (see below), whose sum is σ = 1221096960000. Its totient is φ = 120888028800.

The previous prime is 423221032309. The next prime is 423221032417. The reversal of 423221032344 is 443230122324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 786189 + ... + 1210179.

It is an arithmetic number, because the mean of its divisors is an integer number (9539820000).

Almost surely, 2^423221032344 is an apocalyptic number.

423221032344 is a gapful number since it is divisible by the number (44) 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 423221032344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (610548480000).

423221032344 is an abundant number, since it is smaller than the sum of its proper divisors (797875927656).

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

423221032344 is a wasteful number, since it uses less digits than its factorization.

423221032344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424229 (or 424225 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 423221032344 its reverse (443230122324), we get a palindrome (866451154668).

The spelling of 423221032344 in words is "four hundred twenty-three billion, two hundred twenty-one million, thirty-two thousand, three hundred forty-four".