36440731 has 2 divisors, whose sum is σ = 36440732. Its totient is φ = 36440730.

The previous prime is 36440713. The next prime is 36440743. The reversal of 36440731 is 13704463.

Together with previous prime (36440713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (13704463) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36440731 - 2¹⁷ = 36309659 is a prime.

It is a super-2 number, since 2×36440731² = 2655853751628722, 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 36440731.

It is not a weakly prime, because it can be changed into another prime (36440711) 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, 18220365 + 18220366.

It is an arithmetic number, because the mean of its divisors is an integer number (18220366).

Almost surely, 2^36440731 is an apocalyptic number.

36440731 is a deficient number, since it is larger than the sum of its proper divisors (1).

36440731 is an equidigital number, since it uses as much as digits as its factorization.

36440731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 36440731 is about 6036.6158565872. The cubic root of 36440731 is about 331.5347277313.

The spelling of 36440731 in words is "thirty-six million, four hundred forty thousand, seven hundred thirty-one".