133101 has 12 divisors (see below), whose sum is σ = 200928. Its totient is φ = 84744.

The previous prime is 133097. The next prime is 133103. The reversal of 133101 is 101331.

It is not a de Polignac number, because 133101 - 2² = 133097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133103) 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, 115 + ... + 528.

It is an arithmetic number, because the mean of its divisors is an integer number (16744).

2¹³³¹⁰¹ is an apocalyptic number.

It is an amenable number.

133101 is a deficient number, since it is larger than the sum of its proper divisors (67827).

133101 is a wasteful number, since it uses less digits than its factorization.

133101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 9.

The square root of 133101 is about 364.8300974426. The cubic root of 133101 is about 51.0576050369.

Adding to 133101 its reverse (101331), we get a palindrome (234432).

The spelling of 133101 in words is "one hundred thirty-three thousand, one hundred one".