201430133 has 4 divisors (see below), whose sum is σ = 201826380. Its totient is φ = 201033888.

The previous prime is 201430111. The next prime is 201430169. The reversal of 201430133 is 331034102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 126382564 + 75047569 = 11242^2 + 8663^2 .

It is a cyclic number.

It is not a de Polignac number, because 201430133 - 2⁶ = 201430069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201430193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197360 + ... + 198377.

It is an arithmetic number, because the mean of its divisors is an integer number (50456595).

Almost surely, 2^201430133 is an apocalyptic number.

It is an amenable number.

201430133 is a deficient number, since it is larger than the sum of its proper divisors (396247).

201430133 is an equidigital number, since it uses as much as digits as its factorization.

201430133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396246.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 201430133 is about 14192.6083931038. The cubic root of 201430133 is about 586.1941497342.

Adding to 201430133 its reverse (331034102), we get a palindrome (532464235).

The spelling of 201430133 in words is "two hundred one million, four hundred thirty thousand, one hundred thirty-three".