201643133 has 8 divisors (see below), whose sum is σ = 206537760. Its totient is φ = 196804080.

The previous prime is 201643129. The next prime is 201643157. The reversal of 201643133 is 331346102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201643133 - 2² = 201643129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201643099 and 201643108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201643163) 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 7 ways as a sum of consecutive naturals, for example, 6503 + ... + 21108.

It is an arithmetic number, because the mean of its divisors is an integer number (25817220).

Almost surely, 2^201643133 is an apocalyptic number.

It is an amenable number.

201643133 is a deficient number, since it is larger than the sum of its proper divisors (4894627).

201643133 is a wasteful number, since it uses less digits than its factorization.

201643133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27787.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 201643133 is about 14200.1103164729. The cubic root of 201643133 is about 586.4006983896.

Adding to 201643133 its reverse (331346102), we get a palindrome (532989235).

The spelling of 201643133 in words is "two hundred one million, six hundred forty-three thousand, one hundred thirty-three".