43043004421031 has 4 divisors (see below), whose sum is σ = 43160287812192. Its totient is φ = 42925721029872.

The previous prime is 43043004420991. The next prime is 43043004421033. The reversal of 43043004421031 is 13012440034034.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 43043004421031 - 2²² = 43043000226727 is a prime.

It is a super-2 number, since 2×43043004421031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43043004420985 and 43043004421003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43043004421033) 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, 58641695030 + ... + 58641695763.

It is an arithmetic number, because the mean of its divisors is an integer number (10790071953048).

Almost surely, 2^{43043004421031} is an apocalyptic number.

43043004421031 is a deficient number, since it is larger than the sum of its proper divisors (117283391161).

43043004421031 is a wasteful number, since it uses less digits than its factorization.

43043004421031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117283391160.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 43043004421031 its reverse (13012440034034), we get a palindrome (56055444455065).

The spelling of 43043004421031 in words is "forty-three trillion, forty-three billion, four million, four hundred twenty-one thousand, thirty-one".