133300643 has 16 divisors (see below), whose sum is σ = 154592256. Its totient is φ = 112583520.

The previous prime is 133300633. The next prime is 133300669. The reversal of 133300643 is 346003331.

It is not a de Polignac number, because 133300643 - 2¹⁰ = 133299619 is a prime.

It is a super-2 number, since 2×133300643² = 35538122848426898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133300613) 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 15 ways as a sum of consecutive naturals, for example, 210938 + ... + 211568.

It is an arithmetic number, because the mean of its divisors is an integer number (9662016).

Almost surely, 2^133300643 is an apocalyptic number.

133300643 is a deficient number, since it is larger than the sum of its proper divisors (21291613).

133300643 is a wasteful number, since it uses less digits than its factorization.

133300643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034.

The product of its (nonzero) digits is 1944, while the sum is 23.

The square root of 133300643 is about 11545.5897640614. The cubic root of 133300643 is about 510.8311999984.

Adding to 133300643 its reverse (346003331), we get a palindrome (479303974).

The spelling of 133300643 in words is "one hundred thirty-three million, three hundred thousand, six hundred forty-three".