43434431 has 8 divisors (see below), whose sum is σ = 45102720. Its totient is φ = 41777568.

The previous prime is 43434427. The next prime is 43434449. The reversal of 43434431 is 13443434.

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 43434431 - 2² = 43434427 is a prime.

It is a super-2 number, since 2×43434431² = 3773099592587522, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 43434431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43434421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5330 + ... + 10736.

It is an arithmetic number, because the mean of its divisors is an integer number (5637840).

Almost surely, 2^43434431 is an apocalyptic number.

43434431 is a deficient number, since it is larger than the sum of its proper divisors (1668289).

43434431 is a wasteful number, since it uses less digits than its factorization.

43434431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5713.

The product of its digits is 6912, while the sum is 26.

The square root of 43434431 is about 6590.4803315085. The cubic root of 43434431 is about 351.5156880064.

Adding to 43434431 its reverse (13443434), we get a palindrome (56877865).

The spelling of 43434431 in words is "forty-three million, four hundred thirty-four thousand, four hundred thirty-one".