43345431 has 12 divisors (see below), whose sum is σ = 62671960. Its totient is φ = 28868400.

The previous prime is 43345391. The next prime is 43345433. The reversal of 43345431 is 13454334.

43345431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43345431 - 2⁷ = 43345303 is a prime.

It is a super-2 number, since 2×43345431² = 3757652777151522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43345395 and 43345404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43345433) 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 11 ways as a sum of consecutive naturals, for example, 11481 + ... + 14781.

Almost surely, 2^43345431 is an apocalyptic number.

43345431 is a deficient number, since it is larger than the sum of its proper divisors (19326529).

43345431 is a wasteful number, since it uses less digits than its factorization.

43345431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4766 (or 4763 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 43345431 is about 6583.7247056662. The cubic root of 43345431 is about 351.2754309251.

Adding to 43345431 its reverse (13454334), we get a palindrome (56799765).

The spelling of 43345431 in words is "forty-three million, three hundred forty-five thousand, four hundred thirty-one".