20386123 has 2 divisors, whose sum is σ = 20386124. Its totient is φ = 20386122.

The previous prime is 20386117. The next prime is 20386133. The reversal of 20386123 is 32168302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20386123 - 2⁹ = 20385611 is a prime.

It is a super-2 number, since 2×20386123² = 831188021942258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20386133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10193061 + 10193062.

It is an arithmetic number, because the mean of its divisors is an integer number (10193062).

Almost surely, 2^20386123 is an apocalyptic number.

20386123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20386123 is an equidigital number, since it uses as much as digits as its factorization.

20386123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 20386123 is about 4515.0994451950. The cubic root of 20386123 is about 273.1774709587.

The spelling of 20386123 in words is "twenty million, three hundred eighty-six thousand, one hundred twenty-three".