40536631 has 2 divisors, whose sum is σ = 40536632. Its totient is φ = 40536630.

The previous prime is 40536611. The next prime is 40536667. The reversal of 40536631 is 13663504.

40536631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40536631 - 2¹¹ = 40534583 is a prime.

It is a super-2 number, since 2×40536631² = 3286436905660322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40536631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40536611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20268315 + 20268316.

It is an arithmetic number, because the mean of its divisors is an integer number (20268316).

Almost surely, 2^40536631 is an apocalyptic number.

40536631 is a deficient number, since it is larger than the sum of its proper divisors (1).

40536631 is an equidigital number, since it uses as much as digits as its factorization.

40536631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 40536631 is about 6366.8383833737. The cubic root of 40536631 is about 343.5177774368.

The spelling of 40536631 in words is "forty million, five hundred thirty-six thousand, six hundred thirty-one".