201023213 has 4 divisors (see below), whose sum is σ = 201069948. Its totient is φ = 200976480.

The previous prime is 201023191. The next prime is 201023219. The reversal of 201023213 is 312320102.

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 75986089 + 125037124 = 8717^2 + 11182^2 .

It is a cyclic number.

It is not a de Polignac number, because 201023213 - 2¹⁰ = 201022189 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 (201023219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16178 + ... + 25763.

It is an arithmetic number, because the mean of its divisors is an integer number (50267487).

Almost surely, 2^201023213 is an apocalyptic number.

It is an amenable number.

201023213 is a deficient number, since it is larger than the sum of its proper divisors (46735).

201023213 is an equidigital number, since it uses as much as digits as its factorization.

201023213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46734.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 201023213 is about 14178.2655145120. The cubic root of 201023213 is about 585.7991493676.

Adding to 201023213 its reverse (312320102), we get a palindrome (513343315).

The spelling of 201023213 in words is "two hundred one million, twenty-three thousand, two hundred thirteen".