43130031431 has 4 divisors (see below), whose sum is σ = 43199709000. Its totient is φ = 43060353864.

The previous prime is 43130031391. The next prime is 43130031433. The reversal of 43130031431 is 13413003134.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13413003134 = 2 ⋅6706501567.

It is a cyclic number.

It is not a de Polignac number, because 43130031431 - 2²² = 43125837127 is a prime.

It is a super-2 number, since 2×43130031431² (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 = 43130031397 and 43130031406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43130031433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34837856 + ... + 34839093.

It is an arithmetic number, because the mean of its divisors is an integer number (10799927250).

Almost surely, 2^43130031431 is an apocalyptic number.

43130031431 is a deficient number, since it is larger than the sum of its proper divisors (69677569).

43130031431 is an equidigital number, since it uses as much as digits as its factorization.

43130031431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69677568.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 43130031431 its reverse (13413003134), we get a palindrome (56543034565).

The spelling of 43130031431 in words is "forty-three billion, one hundred thirty million, thirty-one thousand, four hundred thirty-one".