133111617 has 16 divisors (see below), whose sum is σ = 182012160. Its totient is φ = 86485392.

The previous prime is 133111609. The next prime is 133111633. The reversal of 133111617 is 716111331.

It is not a de Polignac number, because 133111617 - 2³ = 133111609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133111687) 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 15 ways as a sum of consecutive naturals, for example, 79018 + ... + 80684.

It is an arithmetic number, because the mean of its divisors is an integer number (11375760).

Almost surely, 2^133111617 is an apocalyptic number.

It is an amenable number.

133111617 is a deficient number, since it is larger than the sum of its proper divisors (48900543).

133111617 is a wasteful number, since it uses less digits than its factorization.

133111617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332.

The product of its digits is 378, while the sum is 24.

The square root of 133111617 is about 11537.4007904727. The cubic root of 133111617 is about 510.5896256282.

Adding to 133111617 its reverse (716111331), we get a palindrome (849222948).

The spelling of 133111617 in words is "one hundred thirty-three million, one hundred eleven thousand, six hundred seventeen".