201123320311 has 2 divisors, whose sum is σ = 201123320312. Its totient is φ = 201123320310.

The previous prime is 201123320297. The next prime is 201123320357. The reversal of 201123320311 is 113023321102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201123320311 - 2⁹ = 201123319799 is a prime.

It is a super-2 number, since 2×201123320311² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201123320371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100561660155 + 100561660156.

It is an arithmetic number, because the mean of its divisors is an integer number (100561660156).

Almost surely, 2^201123320311 is an apocalyptic number.

201123320311 is a deficient number, since it is larger than the sum of its proper divisors (1).

201123320311 is an equidigital number, since it uses as much as digits as its factorization.

201123320311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 201123320311 its reverse (113023321102), we get a palindrome (314146641413).

The spelling of 201123320311 in words is "two hundred one billion, one hundred twenty-three million, three hundred twenty thousand, three hundred eleven".