443240431 has 12 divisors (see below), whose sum is σ = 462452328. Its totient is φ = 424670064.

The previous prime is 443240423. The next prime is 443240453. The reversal of 443240431 is 134042344.

It is not a de Polignac number, because 443240431 - 2³ = 443240423 is a prime.

It is a super-2 number, since 2×443240431² = 392924159346131522, 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 = 443240396 and 443240405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (443240471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95736 + ... + 100258.

It is an arithmetic number, because the mean of its divisors is an integer number (38537694).

Almost surely, 2^443240431 is an apocalyptic number.

443240431 is a deficient number, since it is larger than the sum of its proper divisors (19211897).

443240431 is an equidigital number, since it uses as much as digits as its factorization.

443240431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4662 (or 4619 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 443240431 is about 21053.2760158603. The cubic root of 443240431 is about 762.4530794742.

Adding to 443240431 its reverse (134042344), we get a palindrome (577282775).

The spelling of 443240431 in words is "four hundred forty-three million, two hundred forty thousand, four hundred thirty-one".