201322311131 has 16 divisors (see below), whose sum is σ = 208621590528. Its totient is φ = 194074185600.

The previous prime is 201322311101. The next prime is 201322311173. The reversal of 201322311131 is 131113223102.

It is a happy number.

It is not a de Polignac number, because 201322311131 - 2¹⁰ = 201322310107 is a prime.

It is a super-2 number, since 2×201322311131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201322311101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16836851 + ... + 16848803.

It is an arithmetic number, because the mean of its divisors is an integer number (13038849408).

Almost surely, 2^201322311131 is an apocalyptic number.

201322311131 is a deficient number, since it is larger than the sum of its proper divisors (7299279397).

201322311131 is a wasteful number, since it uses less digits than its factorization.

201322311131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14042.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 201322311131 its reverse (131113223102), we get a palindrome (332435534233).

The spelling of 201322311131 in words is "two hundred one billion, three hundred twenty-two million, three hundred eleven thousand, one hundred thirty-one".