133340023 has 2 divisors, whose sum is σ = 133340024. Its totient is φ = 133340022.

The previous prime is 133340017. The next prime is 133340047. The reversal of 133340023 is 320043331.

It is a weak prime.

It is an emirp because it is prime and its reverse (320043331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133340023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133340003) 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, 66670011 + 66670012.

It is an arithmetic number, because the mean of its divisors is an integer number (66670012).

Almost surely, 2^133340023 is an apocalyptic number.

133340023 is a deficient number, since it is larger than the sum of its proper divisors (1).

133340023 is an equidigital number, since it uses as much as digits as its factorization.

133340023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 133340023 is about 11547.2950512230. The cubic root of 133340023 is about 510.8814987106.

Adding to 133340023 its reverse (320043331), we get a palindrome (453383354).

The spelling of 133340023 in words is "one hundred thirty-three million, three hundred forty thousand, twenty-three".