133123203 has 8 divisors (see below), whose sum is σ = 197219600. Its totient is φ = 88748784.

The previous prime is 133123189. The next prime is 133123213. The reversal of 133123203 is 302321331.

It is not a de Polignac number, because 133123203 - 2¹⁰ = 133122179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133123213) 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, 2465218 + ... + 2465271.

It is an arithmetic number, because the mean of its divisors is an integer number (24652450).

Almost surely, 2^133123203 is an apocalyptic number.

133123203 is a deficient number, since it is larger than the sum of its proper divisors (64096397).

133123203 is an equidigital number, since it uses as much as digits as its factorization.

133123203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4930498 (or 4930492 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 133123203 is about 11537.9028857067. The cubic root of 133123203 is about 510.6044390605.

Adding to 133123203 its reverse (302321331), we get a palindrome (435444534).

The spelling of 133123203 in words is "one hundred thirty-three million, one hundred twenty-three thousand, two hundred three".