133223311 has 4 divisors (see below), whose sum is σ = 143471272. Its totient is φ = 122975352.

The previous prime is 133223263. The next prime is 133223317. The reversal of 133223311 is 113322331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113322331 = 4999 ⋅22669.

It is a cyclic number.

It is not a de Polignac number, because 133223311 - 2⁷ = 133223183 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 (133223317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5123961 + ... + 5123986.

It is an arithmetic number, because the mean of its divisors is an integer number (35867818).

Almost surely, 2^133223311 is an apocalyptic number.

133223311 is a deficient number, since it is larger than the sum of its proper divisors (10247961).

133223311 is a wasteful number, since it uses less digits than its factorization.

133223311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10247960.

The product of its digits is 324, while the sum is 19.

The square root of 133223311 is about 11542.2402938078. The cubic root of 133223311 is about 510.7323976745.

Adding to 133223311 its reverse (113322331), we get a palindrome (246545642).

The spelling of 133223311 in words is "one hundred thirty-three million, two hundred twenty-three thousand, three hundred eleven".