43011443231 has 16 divisors (see below), whose sum is σ = 44246200320. Its totient is φ = 41785897920.

The previous prime is 43011443219. The next prime is 43011443239. The reversal of 43011443231 is 13234411034.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 43011443231 - 2¹⁴ = 43011426847 is a prime.

It is a super-2 number, since 2×43011443231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43011443231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43011443239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12622730 + ... + 12626136.

It is an arithmetic number, because the mean of its divisors is an integer number (2765387520).

Almost surely, 2^43011443231 is an apocalyptic number.

43011443231 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

43011443231 is a deficient number, since it is larger than the sum of its proper divisors (1234757089).

43011443231 is a wasteful number, since it uses less digits than its factorization.

43011443231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4654.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 43011443231 its reverse (13234411034), we get a palindrome (56245854265).

The spelling of 43011443231 in words is "forty-three billion, eleven million, four hundred forty-three thousand, two hundred thirty-one".