133243203 has 4 divisors (see below), whose sum is σ = 177657608. Its totient is φ = 88828800.

The previous prime is 133243199. The next prime is 133243207. The reversal of 133243203 is 302342331.

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 (133243199) and next prime (133243207).

It is not a de Polignac number, because 133243203 - 2² = 133243199 is a prime.

It is a super-2 number, since 2×133243203² = 35507502291398418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133243203.

It is not an unprimeable number, because it can be changed into a prime (133243207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22207198 + ... + 22207203.

It is an arithmetic number, because the mean of its divisors is an integer number (44414402).

Almost surely, 2^133243203 is an apocalyptic number.

133243203 is a deficient number, since it is larger than the sum of its proper divisors (44414405).

133243203 is an equidigital number, since it uses as much as digits as its factorization.

133243203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44414404.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 133243203 is about 11543.1019661095. The cubic root of 133243203 is about 510.7578161071.

Adding to 133243203 its reverse (302342331), we get a palindrome (435585534).

The spelling of 133243203 in words is "one hundred thirty-three million, two hundred forty-three thousand, two hundred three".