36540631 has 2 divisors, whose sum is σ = 36540632. Its totient is φ = 36540630.

The previous prime is 36540613. The next prime is 36540643. The reversal of 36540631 is 13604563.

36540631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (36540613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 36540631 - 2¹⁷ = 36409559 is a prime.

It is a super-2 number, since 2×36540631² = 2670435427756322, 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 36540631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36540671) 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, 18270315 + 18270316.

It is an arithmetic number, because the mean of its divisors is an integer number (18270316).

Almost surely, 2^36540631 is an apocalyptic number.

36540631 is a deficient number, since it is larger than the sum of its proper divisors (1).

36540631 is an equidigital number, since it uses as much as digits as its factorization.

36540631 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 36540631 is about 6044.8846969980. The cubic root of 36540631 is about 331.8374119223.

The spelling of 36540631 in words is "thirty-six million, five hundred forty thousand, six hundred thirty-one".