423221633 has 8 divisors (see below), whose sum is σ = 427029408. Its totient is φ = 419424544.

The previous prime is 423221629. The next prime is 423221657. The reversal of 423221633 is 336122324.

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

It is a cyclic number.

It is not a de Polignac number, because 423221633 - 2² = 423221629 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423221033) 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, 91310 + ... + 95832.

It is an arithmetic number, because the mean of its divisors is an integer number (53378676).

Almost surely, 2^423221633 is an apocalyptic number.

It is an amenable number.

423221633 is a deficient number, since it is larger than the sum of its proper divisors (3807775).

423221633 is a wasteful number, since it uses less digits than its factorization.

423221633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5343.

The product of its digits is 5184, while the sum is 26.

The square root of 423221633 is about 20572.3511782198. The cubic root of 423221633 is about 750.7971571612.

Adding to 423221633 its reverse (336122324), we get a palindrome (759343957).

The spelling of 423221633 in words is "four hundred twenty-three million, two hundred twenty-one thousand, six hundred thirty-three".