201123313 has 2 divisors, whose sum is σ = 201123314. Its totient is φ = 201123312.

The previous prime is 201123269. The next prime is 201123337. The reversal of 201123313 is 313321102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200845584 + 277729 = 14172^2 + 527^2 .

It is a cyclic number.

It is not a de Polignac number, because 201123313 - 2¹³ = 201115121 is a prime.

It is not a weakly prime, because it can be changed into another prime (201123353) 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, 100561656 + 100561657.

It is an arithmetic number, because the mean of its divisors is an integer number (100561657).

Almost surely, 2^201123313 is an apocalyptic number.

It is an amenable number.

201123313 is a deficient number, since it is larger than the sum of its proper divisors (1).

201123313 is an equidigital number, since it uses as much as digits as its factorization.

201123313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 201123313 is about 14181.7951261468. The cubic root of 201123313 is about 585.8963666053.

Adding to 201123313 its reverse (313321102), we get a palindrome (514444415).

The spelling of 201123313 in words is "two hundred one million, one hundred twenty-three thousand, three hundred thirteen".