4231231440 has 80 divisors (see below), whose sum is σ = 13153622400. Its totient is φ = 1125162496.

The previous prime is 4231231427. The next prime is 4231231453. The reversal of 4231231440 is 441321324.

It is an interprime number because it is at equal distance from previous prime (4231231427) and next prime (4231231453).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 4231231440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61606 + ... + 110714.

It is an arithmetic number, because the mean of its divisors is an integer number (164420280).

Almost surely, 2^4231231440 is an apocalyptic number.

4231231440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4231231440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6576811200).

4231231440 is an abundant number, since it is smaller than the sum of its proper divisors (8922390960).

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

4231231440 is a wasteful number, since it uses less digits than its factorization.

4231231440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49484 (or 49478 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 4231231440 is about 65047.9164923828. The cubic root of 4231231440 is about 1617.4179565928.

Adding to 4231231440 its reverse (441321324), we get a palindrome (4672552764).

The spelling of 4231231440 in words is "four billion, two hundred thirty-one million, two hundred thirty-one thousand, four hundred forty".