133840583 has 4 divisors (see below), whose sum is σ = 134324040. Its totient is φ = 133357128.

The previous prime is 133840549. The next prime is 133840589. The reversal of 133840583 is 385048331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 385048331 = 619 ⋅622049.

It is a cyclic number.

It is not a de Polignac number, because 133840583 - 2¹² = 133836487 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 (133840589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241313 + ... + 241866.

It is an arithmetic number, because the mean of its divisors is an integer number (33581010).

Almost surely, 2^133840583 is an apocalyptic number.

133840583 is a deficient number, since it is larger than the sum of its proper divisors (483457).

133840583 is an equidigital number, since it uses as much as digits as its factorization.

133840583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483456.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 133840583 is about 11568.9490879682. The cubic root of 133840583 is about 511.5199854466.

The spelling of 133840583 in words is "one hundred thirty-three million, eight hundred forty thousand, five hundred eighty-three".