36317021 has 16 divisors (see below), whose sum is σ = 40757808. Its totient is φ = 32140800.

The previous prime is 36316991. The next prime is 36317033. The reversal of 36317021 is 12071363.

It is a happy number.

36317021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 27825625 + 8491396 = 5275^2 + 2914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36317021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36317081) 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 in 15 ways as a sum of consecutive naturals, for example, 31955 + ... + 33071.

It is an arithmetic number, because the mean of its divisors is an integer number (2547363).

Almost surely, 2^36317021 is an apocalyptic number.

It is an amenable number.

36317021 is a deficient number, since it is larger than the sum of its proper divisors (4440787).

36317021 is a wasteful number, since it uses less digits than its factorization.

36317021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 36317021 is about 6026.3605102914. The cubic root of 36317021 is about 331.1591346355.

Adding to 36317021 its reverse (12071363), we get a palindrome (48388384).

The spelling of 36317021 in words is "thirty-six million, three hundred seventeen thousand, twenty-one".