20936313 has 20 divisors (see below), whose sum is σ = 32007888. Its totient is φ = 13630680.

The previous prime is 20936303. The next prime is 20936317. The reversal of 20936313 is 31363902.

20936313 is a `hidden beast` number, since 20 + 9 + 3 + 631 + 3 = 666.

It is not a de Polignac number, because 20936313 - 2¹⁶ = 20870777 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20936317) 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 in 19 ways as a sum of consecutive naturals, for example, 478 + ... + 6488.

Almost surely, 2^20936313 is an apocalyptic number.

It is an amenable number.

20936313 is a deficient number, since it is larger than the sum of its proper divisors (11071575).

20936313 is an equidigital number, since it uses as much as digits as its factorization.

20936313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6066 (or 6057 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 20936313 is about 4575.6215971166. The cubic root of 20936313 is about 275.6132342611.

The spelling of 20936313 in words is "twenty million, nine hundred thirty-six thousand, three hundred thirteen".