133966523 has 2 divisors, whose sum is σ = 133966524. Its totient is φ = 133966522.

The previous prime is 133966519. The next prime is 133966561. The reversal of 133966523 is 325669331.

It is an a-pointer prime, because the next prime (133966561) can be obtained adding 133966523 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133966523 - 2² = 133966519 is a prime.

It is a super-3 number, since 3×133966523³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (133966223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66983261 + 66983262.

It is an arithmetic number, because the mean of its divisors is an integer number (66983262).

Almost surely, 2^133966523 is an apocalyptic number.

133966523 is a deficient number, since it is larger than the sum of its proper divisors (1).

133966523 is an equidigital number, since it uses as much as digits as its factorization.

133966523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 38.

The square root of 133966523 is about 11574.3908263027. The cubic root of 133966523 is about 511.6803768368.

The spelling of 133966523 in words is "one hundred thirty-three million, nine hundred sixty-six thousand, five hundred twenty-three".