4231223440 has 40 divisors (see below), whose sum is σ = 9915079680. Its totient is φ = 1679158656.

The previous prime is 4231223429. The next prime is 4231223441. The reversal of 4231223440 is 443221324.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (4231223441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198070 + ... + 218389.

It is an arithmetic number, because the mean of its divisors is an integer number (247876992).

Almost surely, 2^4231223440 is an apocalyptic number.

4231223440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4231223440 is an abundant number, since it is smaller than the sum of its proper divisors (5683856240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4231223440 is a wasteful number, since it uses less digits than its factorization.

4231223440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416599 (or 416593 counting only the distinct ones).

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

The square root of 4231223440 is about 65047.8549992235. The cubic root of 4231223440 is about 1617.4169372401.

Adding to 4231223440 its reverse (443221324), we get a palindrome (4674444764).

The spelling of 4231223440 in words is "four billion, two hundred thirty-one million, two hundred twenty-three thousand, four hundred forty".