133135233 has 32 divisors (see below), whose sum is σ = 221985792. Its totient is φ = 68952000.

The previous prime is 133135229. The next prime is 133135253. The reversal of 133135233 is 332531331.

It is not a de Polignac number, because 133135233 - 2² = 133135229 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133135253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101683 + ... + 102983.

It is an arithmetic number, because the mean of its divisors is an integer number (6937056).

Almost surely, 2^133135233 is an apocalyptic number.

It is an amenable number.

133135233 is a deficient number, since it is larger than the sum of its proper divisors (88850559).

133135233 is a wasteful number, since it uses less digits than its factorization.

133135233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765.

The product of its digits is 2430, while the sum is 24.

The square root of 133135233 is about 11538.4241991704. The cubic root of 133135233 is about 510.6198192653.

Adding to 133135233 its reverse (332531331), we get a palindrome (465666564).

The spelling of 133135233 in words is "one hundred thirty-three million, one hundred thirty-five thousand, two hundred thirty-three".