43053443431 has 4 divisors (see below), whose sum is σ = 43054103664. Its totient is φ = 43052783200.

The previous prime is 43053443399. The next prime is 43053443441. The reversal of 43053443431 is 13434435034.

43053443431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13434435034 = 2 ⋅6717217517.

It is a cyclic number.

It is not a de Polignac number, because 43053443431 - 2⁵ = 43053443399 is a prime.

It is a super-2 number, since 2×43053443431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43053443441) 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, 220075 + ... + 366796.

It is an arithmetic number, because the mean of its divisors is an integer number (10763525916).

Almost surely, 2^43053443431 is an apocalyptic number.

43053443431 is a deficient number, since it is larger than the sum of its proper divisors (660233).

43053443431 is an equidigital number, since it uses as much as digits as its factorization.

43053443431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660232.

The product of its (nonzero) digits is 103680, while the sum is 34.

Adding to 43053443431 its reverse (13434435034), we get a palindrome (56487878465).

The spelling of 43053443431 in words is "forty-three billion, fifty-three million, four hundred forty-three thousand, four hundred thirty-one".