20335123 has 2 divisors, whose sum is σ = 20335124. Its totient is φ = 20335122.

The previous prime is 20335121. The next prime is 20335157. The reversal of 20335123 is 32153302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20335123 - 2¹ = 20335121 is a prime.

Together with 20335121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20335123.

It is not a weakly prime, because it can be changed into another prime (20335121) 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, 10167561 + 10167562.

It is an arithmetic number, because the mean of its divisors is an integer number (10167562).

Almost surely, 2^20335123 is an apocalyptic number.

20335123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20335123 is an equidigital number, since it uses as much as digits as its factorization.

20335123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 20335123 is about 4509.4481924067. The cubic root of 20335123 is about 272.9494778750.

Adding to 20335123 its reverse (32153302), we get a palindrome (52488425).

The spelling of 20335123 in words is "twenty million, three hundred thirty-five thousand, one hundred twenty-three".