423431441 has 4 divisors (see below), whose sum is σ = 434875572. Its totient is φ = 411987312.

The previous prime is 423431381. The next prime is 423431447. The reversal of 423431441 is 144134324.

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

It can be written as a sum of positive squares in 2 ways, for example, as 228130816 + 195300625 = 15104^2 + 13975^2 .

It is a cyclic number.

It is not a de Polignac number, because 423431441 - 2¹⁸ = 423169297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423431441.

It is not an unprimeable number, because it can be changed into a prime (423431447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5722010 + ... + 5722083.

It is an arithmetic number, because the mean of its divisors is an integer number (108718893).

Almost surely, 2^423431441 is an apocalyptic number.

It is an amenable number.

423431441 is a deficient number, since it is larger than the sum of its proper divisors (11444131).

423431441 is a wasteful number, since it uses less digits than its factorization.

423431441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11444130.

The product of its digits is 4608, while the sum is 26.

The square root of 423431441 is about 20577.4498177009. The cubic root of 423431441 is about 750.9212034564.

Adding to 423431441 its reverse (144134324), we get a palindrome (567565765).

The spelling of 423431441 in words is "four hundred twenty-three million, four hundred thirty-one thousand, four hundred forty-one".