443220040431 has 80 divisors (see below), whose sum is σ = 797858899200. Its totient is φ = 239530597632.

The previous prime is 443220040391. The next prime is 443220040453. The reversal of 443220040431 is 134040022344.

It is a happy number.

443220040431 is a `hidden beast` number, since 4 + 4 + 3 + 220 + 0 + 4 + 0 + 431 = 666.

It is not a de Polignac number, because 443220040431 - 2¹⁴ = 443220024047 is a prime.

It is a super-2 number, since 2×443220040431² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 443220040395 and 443220040404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (443220040631) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6353700 + ... + 6423078.

It is an arithmetic number, because the mean of its divisors is an integer number (9973236240).

Almost surely, 2^443220040431 is an apocalyptic number.

443220040431 is a deficient number, since it is larger than the sum of its proper divisors (354638858769).

443220040431 is a wasteful number, since it uses less digits than its factorization.

443220040431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70010 (or 70001 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 443220040431 its reverse (134040022344), we get a palindrome (577260062775).

The spelling of 443220040431 in words is "four hundred forty-three billion, two hundred twenty million, forty thousand, four hundred thirty-one".