133224233 has 4 divisors (see below), whose sum is σ = 133914708. Its totient is φ = 132533760.

The previous prime is 133224227. The next prime is 133224239. The reversal of 133224233 is 332422331.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (133224227) and next prime (133224239).

It can be written as a sum of positive squares in 2 ways, for example, as 55995289 + 77228944 = 7483^2 + 8788^2 .

It is a cyclic number.

It is not a de Polignac number, because 133224233 - 2²⁴ = 116447017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133224199 and 133224208.

It is not an unprimeable number, because it can be changed into a prime (133224239) 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, 344948 + ... + 345333.

It is an arithmetic number, because the mean of its divisors is an integer number (33478677).

Almost surely, 2^133224233 is an apocalyptic number.

It is an amenable number.

133224233 is a deficient number, since it is larger than the sum of its proper divisors (690475).

133224233 is an equidigital number, since it uses as much as digits as its factorization.

133224233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690474.

The product of its digits is 2592, while the sum is 23.

The square root of 133224233 is about 11542.2802339919. The cubic root of 133224233 is about 510.7335758822.

Adding to 133224233 its reverse (332422331), we get a palindrome (465646564).

The spelling of 133224233 in words is "one hundred thirty-three million, two hundred twenty-four thousand, two hundred thirty-three".