423221330 has 48 divisors (see below), whose sum is σ = 888249240. Its totient is φ = 144764928.

The previous prime is 423221327. The next prime is 423221347. The reversal of 423221330 is 33122324.

It can be written as a sum of positive squares in 4 ways, for example, as 66275881 + 356945449 = 8141^2 + 18893^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 299666 + ... + 301074.

Almost surely, 2^423221330 is an apocalyptic number.

423221330 is an abundant number, since it is smaller than the sum of its proper divisors (465027910).

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

423221330 is a wasteful number, since it uses less digits than its factorization.

423221330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043 (or 2036 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 423221330 is about 20572.3438139654. The cubic root of 423221330 is about 750.7969779867.

Adding to 423221330 its reverse (33122324), we get a palindrome (456343654).

The spelling of 423221330 in words is "four hundred twenty-three million, two hundred twenty-one thousand, three hundred thirty".