43422731 has 8 divisors (see below), whose sum is σ = 48526128. Its totient is φ = 38512000.

The previous prime is 43422727. The next prime is 43422763. The reversal of 43422731 is 13722434.

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 43422731 - 2² = 43422727 is a prime.

It is a super-2 number, since 2×43422731² = 3771067134996722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43422731.

It is not an unprimeable number, because it can be changed into a prime (43422721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47690 + ... + 48591.

It is an arithmetic number, because the mean of its divisors is an integer number (6065766).

Almost surely, 2^43422731 is an apocalyptic number.

43422731 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

43422731 is a deficient number, since it is larger than the sum of its proper divisors (5103397).

43422731 is a wasteful number, since it uses less digits than its factorization.

43422731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96333.

The product of its digits is 4032, while the sum is 26.

The square root of 43422731 is about 6589.5926277730. The cubic root of 43422731 is about 351.4841223967.

The spelling of 43422731 in words is "forty-three million, four hundred twenty-two thousand, seven hundred thirty-one".