133100423 has 4 divisors (see below), whose sum is σ = 134058120. Its totient is φ = 132142728.

The previous prime is 133100417. The next prime is 133100431. The reversal of 133100423 is 324001331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324001331 = 467 ⋅693793.

It is a cyclic number.

It is not a de Polignac number, because 133100423 - 2⁸ = 133100167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133106423) 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 in 3 ways as a sum of consecutive naturals, for example, 478640 + ... + 478917.

It is an arithmetic number, because the mean of its divisors is an integer number (33514530).

Almost surely, 2^133100423 is an apocalyptic number.

133100423 is a deficient number, since it is larger than the sum of its proper divisors (957697).

133100423 is an equidigital number, since it uses as much as digits as its factorization.

133100423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957696.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 133100423 is about 11536.9156623423. The cubic root of 133100423 is about 510.5753125762.

Adding to 133100423 its reverse (324001331), we get a palindrome (457101754).

The spelling of 133100423 in words is "one hundred thirty-three million, one hundred thousand, four hundred twenty-three".