20263423 has 2 divisors, whose sum is σ = 20263424. Its totient is φ = 20263422.

The previous prime is 20263417. The next prime is 20263433. The reversal of 20263423 is 32436202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20263423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20263394 and 20263403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20263433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10131711 + 10131712.

It is an arithmetic number, because the mean of its divisors is an integer number (10131712).

Almost surely, 2^20263423 is an apocalyptic number.

20263423 is a deficient number, since it is larger than the sum of its proper divisors (1).

20263423 is an equidigital number, since it uses as much as digits as its factorization.

20263423 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 22.

The square root of 20263423 is about 4501.4911973700. The cubic root of 20263423 is about 272.6283008319.

Adding to 20263423 its reverse (32436202), we get a palindrome (52699625).

The spelling of 20263423 in words is "twenty million, two hundred sixty-three thousand, four hundred twenty-three".