133612 has 6 divisors (see below), whose sum is σ = 233828. Its totient is φ = 66804.

The previous prime is 133597. The next prime is 133631. The reversal of 133612 is 216331.

It is a plaindrome in base 14.

It is an unprimeable number.

133612 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16698 + ... + 16705.

2¹³³⁶¹² is an apocalyptic number.

It is an amenable number.

133612 is a deficient number, since it is larger than the sum of its proper divisors (100216).

133612 is a wasteful number, since it uses less digits than its factorization.

133612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33407 (or 33405 counting only the distinct ones).

The product of its digits is 108, while the sum is 16.

The square root of 133612 is about 365.5297525510. The cubic root of 133612 is about 51.1228615426.

Adding to 133612 its reverse (216331), we get a palindrome (349943).

The spelling of 133612 in words is "one hundred thirty-three thousand, six hundred twelve".