133333233 has 8 divisors (see below), whose sum is σ = 193939296. Its totient is φ = 80808000.

The previous prime is 133333229. The next prime is 133333253. The reversal of 133333233 is 332333331.

It is a happy number.

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

It is not a de Polignac number, because 133333233 - 2² = 133333229 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133333223) 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, 2020168 + ... + 2020233.

It is an arithmetic number, because the mean of its divisors is an integer number (24242412).

Almost surely, 2^133333233 is an apocalyptic number.

It is an amenable number.

133333233 is a deficient number, since it is larger than the sum of its proper divisors (60606063).

133333233 is a wasteful number, since it uses less digits than its factorization.

133333233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040415.

The product of its digits is 4374, while the sum is 24.

The square root of 133333233 is about 11547.0010392309. The cubic root of 133333233 is about 510.8728267850.

Subtracting from 133333233 its sum of digits (24), we obtain a square (133333209 = 11547²).

Adding to 133333233 its reverse (332333331), we get a palindrome (465666564).

The spelling of 133333233 in words is "one hundred thirty-three million, three hundred thirty-three thousand, two hundred thirty-three".