20814023 has 2 divisors, whose sum is σ = 20814024. Its totient is φ = 20814022.

The previous prime is 20813983. The next prime is 20814029. The reversal of 20814023 is 32041802.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20814023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20813986 and 20814004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20814029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10407011 + 10407012.

It is an arithmetic number, because the mean of its divisors is an integer number (10407012).

Almost surely, 2^20814023 is an apocalyptic number.

20814023 is a deficient number, since it is larger than the sum of its proper divisors (1).

20814023 is an equidigital number, since it uses as much as digits as its factorization.

20814023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 20814023 is about 4562.2388144419. The cubic root of 20814023 is about 275.0755627065.

Adding to 20814023 its reverse (32041802), we get a palindrome (52855825).

The spelling of 20814023 in words is "twenty million, eight hundred fourteen thousand, twenty-three".