266306023 has 2 divisors, whose sum is σ = 266306024. Its totient is φ = 266306022.

The previous prime is 266306021. The next prime is 266306041. The reversal of 266306023 is 320603662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266306023 - 2¹ = 266306021 is a prime.

Together with 266306021, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 266305982 and 266306000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266306021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133153011 + 133153012.

It is an arithmetic number, because the mean of its divisors is an integer number (133153012).

Almost surely, 2^266306023 is an apocalyptic number.

266306023 is a deficient number, since it is larger than the sum of its proper divisors (1).

266306023 is an equidigital number, since it uses as much as digits as its factorization.

266306023 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 28.

The square root of 266306023 is about 16318.8854705216. The cubic root of 266306023 is about 643.3692941380.

Adding to 266306023 its reverse (320603662), we get a palindrome (586909685).

The spelling of 266306023 in words is "two hundred sixty-six million, three hundred six thousand, twenty-three".