423323120220 has 384 divisors, whose sum is σ = 1592884887552. Its totient is φ = 81124070400.

The previous prime is 423323120203. The next prime is 423323120249. The reversal of 423323120220 is 22021323324.

It is a super-2 number, since 2×423323120220² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 86904385 + ... + 86909255.

It is an arithmetic number, because the mean of its divisors is an integer number (4148137728).

Almost surely, 2^423323120220 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 423323120220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (796442443776).

423323120220 is an abundant number, since it is smaller than the sum of its proper divisors (1169561767332).

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

423323120220 is a wasteful number, since it uses less digits than its factorization.

423323120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6361 (or 6359 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 423323120220 its reverse (22021323324), we get a palindrome (445344443544).

The spelling of 423323120220 in words is "four hundred twenty-three billion, three hundred twenty-three million, one hundred twenty thousand, two hundred twenty".