133005233 has 4 divisors (see below), whose sum is σ = 133224960. Its totient is φ = 132785508.

The previous prime is 133005211. The next prime is 133005241. The reversal of 133005233 is 332500331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 332500331 = 17 ⋅19558843.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133005233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133001233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108953 + ... + 110166.

It is an arithmetic number, because the mean of its divisors is an integer number (33306240).

Almost surely, 2^133005233 is an apocalyptic number.

It is an amenable number.

133005233 is a deficient number, since it is larger than the sum of its proper divisors (219727).

133005233 is an equidigital number, since it uses as much as digits as its factorization.

133005233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219726.

The product of its (nonzero) digits is 810, while the sum is 20.

The square root of 133005233 is about 11532.7894717627. The cubic root of 133005233 is about 510.4535667702.

Adding to 133005233 its reverse (332500331), we get a palindrome (465505564).

The spelling of 133005233 in words is "one hundred thirty-three million, five thousand, two hundred thirty-three".