201323201 has 2 divisors, whose sum is σ = 201323202. Its totient is φ = 201323200.

The previous prime is 201323189. The next prime is 201323219. The reversal of 201323201 is 102323102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133425601 + 67897600 = 11551^2 + 8240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201323201 is a prime.

It is not a weakly prime, because it can be changed into another prime (201323261) 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 as a sum of consecutive naturals, namely, 100661600 + 100661601.

It is an arithmetic number, because the mean of its divisors is an integer number (100661601).

Almost surely, 2^201323201 is an apocalyptic number.

It is an amenable number.

201323201 is a deficient number, since it is larger than the sum of its proper divisors (1).

201323201 is an equidigital number, since it uses as much as digits as its factorization.

201323201 is an odious number, because the sum of its binary digits is odd.

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

The square root of 201323201 is about 14188.8407207918. The cubic root of 201323201 is about 586.0904015889.

Adding to 201323201 its reverse (102323102), we get a palindrome (303646303).

Subtracting from 201323201 its reverse (102323102), we obtain a palindrome (99000099).

The spelling of 201323201 in words is "two hundred one million, three hundred twenty-three thousand, two hundred one".