20693423 has 2 divisors, whose sum is σ = 20693424. Its totient is φ = 20693422.

The previous prime is 20693389. The next prime is 20693459. The reversal of 20693423 is 32439602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20693423 - 2²⁰ = 19644847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20693473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10346711 + 10346712.

It is an arithmetic number, because the mean of its divisors is an integer number (10346712).

Almost surely, 2^20693423 is an apocalyptic number.

20693423 is a deficient number, since it is larger than the sum of its proper divisors (1).

20693423 is an equidigital number, since it uses as much as digits as its factorization.

20693423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 20693423 is about 4549.0024181132. The cubic root of 20693423 is about 274.5432550396.

It can be divided in two parts, 2069342 and 3, that multiplied together give a palindrome (6208026).

The spelling of 20693423 in words is "twenty million, six hundred ninety-three thousand, four hundred twenty-three".