43131454100443 has 4 divisors (see below), whose sum is σ = 43160227587000. Its totient is φ = 43102680613888.

The previous prime is 43131454100389. The next prime is 43131454100459. The reversal of 43131454100443 is 34400145413134.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43131454100443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43131454100843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14386741030 + ... + 14386744027.

It is an arithmetic number, because the mean of its divisors is an integer number (10790056896750).

Almost surely, 2^{43131454100443} is an apocalyptic number.

43131454100443 is a deficient number, since it is larger than the sum of its proper divisors (28773486557).

43131454100443 is a wasteful number, since it uses less digits than its factorization.

43131454100443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28773486556.

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 43131454100443 its reverse (34400145413134), we get a palindrome (77531599513577).

The spelling of 43131454100443 in words is "forty-three trillion, one hundred thirty-one billion, four hundred fifty-four million, one hundred thousand, four hundred forty-three".