133543109 has 32 divisors (see below), whose sum is σ = 167795712. Its totient is φ = 103680000.

The previous prime is 133543097. The next prime is 133543117. The reversal of 133543109 is 901345331.

It is a cyclic number.

It is not a de Polignac number, because 133543109 - 2¹² = 133539013 is a prime.

It is a super-2 number, since 2×133543109² = 35667523922771762, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133543139) 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 31 ways as a sum of consecutive naturals, for example, 492644 + ... + 492914.

It is an arithmetic number, because the mean of its divisors is an integer number (5243616).

Almost surely, 2^133543109 is an apocalyptic number.

It is an amenable number.

133543109 is a deficient number, since it is larger than the sum of its proper divisors (34252603).

133543109 is a wasteful number, since it uses less digits than its factorization.

133543109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 133543109 is about 11556.0853665937. The cubic root of 133543109 is about 511.1407363298.

It can be divided in two parts, 1335 and 43109, that added together give a palindrome (44444).

The spelling of 133543109 in words is "one hundred thirty-three million, five hundred forty-three thousand, one hundred nine".