201020093 has 4 divisors (see below), whose sum is σ = 201898140. Its totient is φ = 200142048.

The previous prime is 201020047. The next prime is 201020101. The reversal of 201020093 is 390020102.

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 74615044 + 126405049 = 8638^2 + 11243^2 .

It is a cyclic number.

It is not a de Polignac number, because 201020093 - 2⁸ = 201019837 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 (201020693) 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, 438680 + ... + 439137.

It is an arithmetic number, because the mean of its divisors is an integer number (50474535).

Almost surely, 2^201020093 is an apocalyptic number.

It is an amenable number.

201020093 is a deficient number, since it is larger than the sum of its proper divisors (878047).

201020093 is an equidigital number, since it uses as much as digits as its factorization.

201020093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878046.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 201020093 is about 14178.1554865222. The cubic root of 201020093 is about 585.7961187013.

Adding to 201020093 its reverse (390020102), we get a palindrome (591040195).

The spelling of 201020093 in words is "two hundred one million, twenty thousand, ninety-three".