133243353 has 8 divisors (see below), whose sum is σ = 197397600. Its totient is φ = 88828884.

The previous prime is 133243351. The next prime is 133243361. The reversal of 133243353 is 353342331.

It is a happy number.

133243353 is a `hidden beast` number, since 1 + 3 + 324 + 335 + 3 = 666.

It is not a de Polignac number, because 133243353 - 2¹ = 133243351 is a prime.

It is a super-2 number, since 2×133243353² = 35507582237365218, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4934939 = 133243353 / (1 + 3 + 3 + 2 + 4 + 3 + 3 + 5 + 3).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133243351) 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, 2467443 + ... + 2467496.

It is an arithmetic number, because the mean of its divisors is an integer number (24674700).

Almost surely, 2^133243353 is an apocalyptic number.

It is an amenable number.

133243353 is a deficient number, since it is larger than the sum of its proper divisors (64154247).

133243353 is an equidigital number, since it uses as much as digits as its factorization.

133243353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4934948 (or 4934942 counting only the distinct ones).

The product of its digits is 9720, while the sum is 27.

The square root of 133243353 is about 11543.1084634946. The cubic root of 133243353 is about 510.7580077708.

Adding to 133243353 its reverse (353342331), we get a palindrome (486585684).

The spelling of 133243353 in words is "one hundred thirty-three million, two hundred forty-three thousand, three hundred fifty-three".