43031123431 has 8 divisors (see below), whose sum is σ = 43645440384. Its totient is φ = 42417035640.

The previous prime is 43031123423. The next prime is 43031123491. The reversal of 43031123431 is 13432113034.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43031123431 - 2³ = 43031123423 is a prime.

It is a super-2 number, since 2×43031123431² (a number of 22 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 = 43031123396 and 43031123405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43031123491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340500 + ... + 449446.

It is an arithmetic number, because the mean of its divisors is an integer number (5455680048).

Almost surely, 2^43031123431 is an apocalyptic number.

43031123431 is a deficient number, since it is larger than the sum of its proper divisors (614316953).

43031123431 is a wasteful number, since it uses less digits than its factorization.

43031123431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114581.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 43031123431 its reverse (13432113034), we get a palindrome (56463236465).

The spelling of 43031123431 in words is "forty-three billion, thirty-one million, one hundred twenty-three thousand, four hundred thirty-one".