6431223 has 4 divisors (see below), whose sum is σ = 8574968. Its totient is φ = 4287480.

The previous prime is 6431221. The next prime is 6431233. The reversal of 6431223 is 3221346.

It is a happy number.

6431223 is digitally balanced in base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6431223 - 2¹ = 6431221 is a prime.

It is a d-powerful number, because it can be written as 6⁸ + 4¹¹ + 3 + 1 + 2¹⁵ + 2¹⁹ + 3⁵ .

It is a D-number.

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 6431223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6431221) 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, 1071868 + ... + 1071873.

It is an arithmetic number, because the mean of its divisors is an integer number (2143742).

Almost surely, 2^6431223 is an apocalyptic number.

6431223 is a deficient number, since it is larger than the sum of its proper divisors (2143745).

6431223 is a wasteful number, since it uses less digits than its factorization.

6431223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143744.

The product of its digits is 864, while the sum is 21.

The square root of 6431223 is about 2535.9856072147. The cubic root of 6431223 is about 185.9649893637.

Adding to 6431223 its reverse (3221346), we get a palindrome (9652569).

The spelling of 6431223 in words is "six million, four hundred thirty-one thousand, two hundred twenty-three".