133666323 has 8 divisors (see below), whose sum is σ = 203682048. Its totient is φ = 76380744.

The previous prime is 133666321. The next prime is 133666333. The reversal of 133666323 is 323666331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133666323 - 2¹ = 133666321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133666321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3182511 + ... + 3182552.

It is an arithmetic number, because the mean of its divisors is an integer number (25460256).

Almost surely, 2^133666323 is an apocalyptic number.

133666323 is a deficient number, since it is larger than the sum of its proper divisors (70015725).

133666323 is an equidigital number, since it uses as much as digits as its factorization.

133666323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6365073.

The product of its digits is 34992, while the sum is 33.

The square root of 133666323 is about 11561.4152680370. The cubic root of 133666323 is about 511.2978899151.

The spelling of 133666323 in words is "one hundred thirty-three million, six hundred sixty-six thousand, three hundred twenty-three".