133231133 has 8 divisors (see below), whose sum is σ = 157514880. Its totient is φ = 110260080.

The previous prime is 133231129. The next prime is 133231139. The reversal of 133231133 is 331132331.

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

It is not a de Polignac number, because 133231133 - 2² = 133231129 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133231139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327953 + ... + 328358.

It is an arithmetic number, because the mean of its divisors is an integer number (19689360).

Almost surely, 2^133231133 is an apocalyptic number.

It is an amenable number.

133231133 is a deficient number, since it is larger than the sum of its proper divisors (24283747).

133231133 is an equidigital number, since it uses as much as digits as its factorization.

133231133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656347.

The product of its digits is 486, while the sum is 20.

The square root of 133231133 is about 11542.5791311994. The cubic root of 133231133 is about 510.7423930990.

Adding to 133231133 its reverse (331132331), we get a palindrome (464363464).

The spelling of 133231133 in words is "one hundred thirty-three million, two hundred thirty-one thousand, one hundred thirty-three".