40531871 has 2 divisors, whose sum is σ = 40531872. Its totient is φ = 40531870.

The previous prime is 40531867. The next prime is 40531889. The reversal of 40531871 is 17813504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40531871 - 2² = 40531867 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40531801) 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 as a sum of consecutive naturals, namely, 20265935 + 20265936.

It is an arithmetic number, because the mean of its divisors is an integer number (20265936).

Almost surely, 2^40531871 is an apocalyptic number.

40531871 is a deficient number, since it is larger than the sum of its proper divisors (1).

40531871 is an equidigital number, since it uses as much as digits as its factorization.

40531871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 40531871 is about 6366.4645604920. The cubic root of 40531871 is about 343.5043310914.

The spelling of 40531871 in words is "forty million, five hundred thirty-one thousand, eight hundred seventy-one".