40312571 has 16 divisors (see below), whose sum is σ = 44531424. Its totient is φ = 36267264.

The previous prime is 40312561. The next prime is 40312589. The reversal of 40312571 is 17521304.

It is a cyclic number.

It is not a de Polignac number, because 40312571 - 2⁶ = 40312507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40312561) 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 15 ways as a sum of consecutive naturals, for example, 101345 + ... + 101741.

It is an arithmetic number, because the mean of its divisors is an integer number (2783214).

Almost surely, 2^40312571 is an apocalyptic number.

40312571 is a deficient number, since it is larger than the sum of its proper divisors (4218853).

40312571 is a wasteful number, since it uses less digits than its factorization.

40312571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 40312571 is about 6349.2181408422. The cubic root of 40312571 is about 342.8836938185.

Adding to 40312571 its reverse (17521304), we get a palindrome (57833875).

The spelling of 40312571 in words is "forty million, three hundred twelve thousand, five hundred seventy-one".