201323213 has 24 divisors (see below), whose sum is σ = 253256472. Its totient is φ = 158626944.

The previous prime is 201323201. The next prime is 201323219. The reversal of 201323213 is 312323102.

It can be written as a sum of positive squares in 4 ways, for example, as 3161284 + 198161929 = 1778^2 + 14077^2 .

It is not a de Polignac number, because 201323213 - 2⁶ = 201323149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201323191 and 201323200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201323219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201431 + ... + 202427.

It is an arithmetic number, because the mean of its divisors is an integer number (10552353).

Almost surely, 2^201323213 is an apocalyptic number.

It is an amenable number.

201323213 is a deficient number, since it is larger than the sum of its proper divisors (51933259).

201323213 is a wasteful number, since it uses less digits than its factorization.

201323213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341 (or 1334 counting only the distinct ones).

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

The square root of 201323213 is about 14188.8411436593. The cubic root of 201323213 is about 586.0904132337.

Adding to 201323213 its reverse (312323102), we get a palindrome (513646315).

The spelling of 201323213 in words is "two hundred one million, three hundred twenty-three thousand, two hundred thirteen".