4312232132440 has 128 divisors (see below), whose sum is σ = 9946183403520. Its totient is φ = 1682079436800.

The previous prime is 4312232132413. The next prime is 4312232132477. The reversal of 4312232132440 is 442312322134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 539497084 + ... + 539505076.

It is an arithmetic number, because the mean of its divisors is an integer number (77704557840).

Almost surely, 2^{4312232132440} is an apocalyptic number.

4312232132440 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 4312232132440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4973091701760).

4312232132440 is an abundant number, since it is smaller than the sum of its proper divisors (5633951271080).

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

4312232132440 is a wasteful number, since it uses less digits than its factorization.

4312232132440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9933 (or 9929 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 4312232132440 its reverse (442312322134), we get a palindrome (4754544454574).

The spelling of 4312232132440 in words is "four trillion, three hundred twelve billion, two hundred thirty-two million, one hundred thirty-two thousand, four hundred forty".