43223312040 has 128 divisors (see below), whose sum is σ = 137365200000. Its totient is φ = 10849932288.

The previous prime is 43223311991. The next prime is 43223312047. The reversal of 43223312040 is 4021332234.

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 43223312040.

It is not an unprimeable number, because it can be changed into a prime (43223312047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 297586 + ... + 418334.

It is an arithmetic number, because the mean of its divisors is an integer number (1073165625).

Almost surely, 2^43223312040 is an apocalyptic number.

43223312040 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 43223312040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68682600000).

43223312040 is an abundant number, since it is smaller than the sum of its proper divisors (94141887960).

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

43223312040 is a wasteful number, since it uses less digits than its factorization.

43223312040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120939 (or 120935 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 43223312040 its reverse (4021332234), we get a palindrome (47244644274).

The spelling of 43223312040 in words is "forty-three billion, two hundred twenty-three million, three hundred twelve thousand, forty".