133423533 has 12 divisors (see below), whose sum is σ = 194242048. Its totient is φ = 88247880.

The previous prime is 133423513. The next prime is 133423541. The reversal of 133423533 is 335324331.

It is a happy number.

It is not a de Polignac number, because 133423533 - 2⁵ = 133423501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133423497 and 133423506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133423513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57223 + ... + 59508.

Almost surely, 2^133423533 is an apocalyptic number.

It is an amenable number.

133423533 is a deficient number, since it is larger than the sum of its proper divisors (60818515).

133423533 is a wasteful number, since it uses less digits than its factorization.

133423533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116864 (or 116861 counting only the distinct ones).

The product of its digits is 9720, while the sum is 27.

The square root of 133423533 is about 11550.9104835939. The cubic root of 133423533 is about 510.9881303866.

Adding to 133423533 its reverse (335324331), we get a palindrome (468747864).

It can be divided in two parts, 133423 and 533, that added together give a square (133956 = 366²).

The spelling of 133423533 in words is "one hundred thirty-three million, four hundred twenty-three thousand, five hundred thirty-three".