133203423 has 8 divisors (see below), whose sum is σ = 177667200. Its totient is φ = 88770968.

The previous prime is 133203403. The next prime is 133203439. The reversal of 133203423 is 324302331.

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

It is a cyclic number.

It is not a de Polignac number, because 133203423 - 2⁵ = 133203391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133203423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133203403) 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, 5188 + ... + 17126.

It is an arithmetic number, because the mean of its divisors is an integer number (22208400).

Almost surely, 2^133203423 is an apocalyptic number.

133203423 is a deficient number, since it is larger than the sum of its proper divisors (44463777).

133203423 is a wasteful number, since it uses less digits than its factorization.

133203423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15661.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 133203423 is about 11541.3787304637. The cubic root of 133203423 is about 510.7069818236.

Adding to 133203423 its reverse (324302331), we get a palindrome (457505754).

The spelling of 133203423 in words is "one hundred thirty-three million, two hundred three thousand, four hundred twenty-three".