423221023 has 8 divisors (see below), whose sum is σ = 427581440. Its totient is φ = 418876920.

The previous prime is 423221009. The next prime is 423221027. The reversal of 423221023 is 320122324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423221023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423221027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51958 + ... + 59548.

It is an arithmetic number, because the mean of its divisors is an integer number (53447680).

Almost surely, 2^423221023 is an apocalyptic number.

423221023 is a deficient number, since it is larger than the sum of its proper divisors (4360417).

423221023 is a wasteful number, since it uses less digits than its factorization.

423221023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8157.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 423221023 is about 20572.3363524904. The cubic root of 423221023 is about 750.7967964467.

Adding to 423221023 its reverse (320122324), we get a palindrome (743343347).

The spelling of 423221023 in words is "four hundred twenty-three million, two hundred twenty-one thousand, twenty-three".