133521113 has 8 divisors (see below), whose sum is σ = 153325920. Its totient is φ = 114994080.

The previous prime is 133521103. The next prime is 133521119. The reversal of 133521113 is 311125331.

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

It is not a de Polignac number, because 133521113 - 2²⁴ = 116743897 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133521119) 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 7 ways as a sum of consecutive naturals, for example, 319220 + ... + 319637.

It is an arithmetic number, because the mean of its divisors is an integer number (19165740).

Almost surely, 2^133521113 is an apocalyptic number.

It is an amenable number.

133521113 is a deficient number, since it is larger than the sum of its proper divisors (19804807).

133521113 is a wasteful number, since it uses less digits than its factorization.

133521113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638887.

The product of its digits is 270, while the sum is 20.

The square root of 133521113 is about 11555.1336210361. The cubic root of 133521113 is about 511.1126713125.

Adding to 133521113 its reverse (311125331), we get a palindrome (444646444).

The spelling of 133521113 in words is "one hundred thirty-three million, five hundred twenty-one thousand, one hundred thirteen".