40431683 has 2 divisors, whose sum is σ = 40431684. Its totient is φ = 40431682.

The previous prime is 40431623. The next prime is 40431701. The reversal of 40431683 is 38613404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40431683 - 2¹⁰ = 40430659 is a prime.

It is not a weakly prime, because it can be changed into another prime (40431623) 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 as a sum of consecutive naturals, namely, 20215841 + 20215842.

It is an arithmetic number, because the mean of its divisors is an integer number (20215842).

Almost surely, 2^40431683 is an apocalyptic number.

40431683 is a deficient number, since it is larger than the sum of its proper divisors (1).

40431683 is an equidigital number, since it uses as much as digits as its factorization.

40431683 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 40431683 is about 6358.5912748029. The cubic root of 40431683 is about 343.2210691700.

It can be divided in two parts, 40431 and 683, that added together give a palindrome (41114).

The spelling of 40431683 in words is "forty million, four hundred thirty-one thousand, six hundred eighty-three".