20135683 has 2 divisors, whose sum is σ = 20135684. Its totient is φ = 20135682.

The previous prime is 20135681. The next prime is 20135737. The reversal of 20135683 is 38653102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20135683 - 2¹ = 20135681 is a prime.

Together with 20135681, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20135681) 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, 10067841 + 10067842.

It is an arithmetic number, because the mean of its divisors is an integer number (10067842).

Almost surely, 2^20135683 is an apocalyptic number.

20135683 is a deficient number, since it is larger than the sum of its proper divisors (1).

20135683 is an equidigital number, since it uses as much as digits as its factorization.

20135683 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 20135683 is about 4487.2801338896. The cubic root of 20135683 is about 272.0542126298.

Adding to 20135683 its reverse (38653102), we get a palindrome (58788785).

The spelling of 20135683 in words is "twenty million, one hundred thirty-five thousand, six hundred eighty-three".