40431343 has 8 divisors (see below), whose sum is σ = 42230160. Its totient is φ = 38669760.

The previous prime is 40431337. The next prime is 40431359. The reversal of 40431343 is 34313404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40431343 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40431323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7078 + ... + 11443.

It is an arithmetic number, because the mean of its divisors is an integer number (5278770).

Almost surely, 2^40431343 is an apocalyptic number.

40431343 is a deficient number, since it is larger than the sum of its proper divisors (1798817).

40431343 is a wasteful number, since it uses less digits than its factorization.

40431343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18617.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 40431343 is about 6358.5645392651. The cubic root of 40431343 is about 343.2201070904.

Adding to 40431343 its reverse (34313404), we get a palindrome (74744747).

The spelling of 40431343 in words is "forty million, four hundred thirty-one thousand, three hundred forty-three".