443220231 has 4 divisors (see below), whose sum is σ = 590960312. Its totient is φ = 295480152.

The previous prime is 443220223. The next prime is 443220247. The reversal of 443220231 is 132022344.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 443220231 - 2³ = 443220223 is a prime.

It is a super-2 number, since 2×443220231² = 392888346335386722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 443220198 and 443220207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (443220251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73870036 + ... + 73870041.

It is an arithmetic number, because the mean of its divisors is an integer number (147740078).

Almost surely, 2^443220231 is an apocalyptic number.

443220231 is a deficient number, since it is larger than the sum of its proper divisors (147740081).

443220231 is a wasteful number, since it uses less digits than its factorization.

443220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147740080.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 443220231 is about 21052.7962750795. The cubic root of 443220231 is about 762.4414967566.

Adding to 443220231 its reverse (132022344), we get a palindrome (575242575).

The spelling of 443220231 in words is "four hundred forty-three million, two hundred twenty thousand, two hundred thirty-one".