43031323102440 has 32 divisors (see below), whose sum is σ = 129093969307680. Its totient is φ = 11475019493952.

The previous prime is 43031323102421. The next prime is 43031323102447. The reversal of 43031323102440 is 4420132313034.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 43031323102398 and 43031323102407.

It is not an unprimeable number, because it can be changed into a prime (43031323102447) 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, 179297179474 + ... + 179297179713.

It is an arithmetic number, because the mean of its divisors is an integer number (4034186540865).

Almost surely, 2^{43031323102440} is an apocalyptic number.

43031323102440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43031323102440 is an abundant number, since it is smaller than the sum of its proper divisors (86062646205240).

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

43031323102440 is a wasteful number, since it uses less digits than its factorization.

43031323102440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358594359201 (or 358594359197 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 43031323102440 its reverse (4420132313034), we get a palindrome (47451455415474).

The spelling of 43031323102440 in words is "forty-three trillion, thirty-one billion, three hundred twenty-three million, one hundred two thousand, four hundred forty".