311122001131 has 8 divisors (see below), whose sum is σ = 318718701504. Its totient is φ = 303525698880.

The previous prime is 311122001093. The next prime is 311122001147. The reversal of 311122001131 is 131100221113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311122001131 - 2⁹ = 311122000619 is a prime.

It is a super-2 number, since 2×311122001131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311122001231) 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 in 7 ways as a sum of consecutive naturals, for example, 2033881 + ... + 2181493.

It is an arithmetic number, because the mean of its divisors is an integer number (39839837688).

Almost surely, 2^311122001131 is an apocalyptic number.

311122001131 is a deficient number, since it is larger than the sum of its proper divisors (7596700373).

311122001131 is a wasteful number, since it uses less digits than its factorization.

311122001131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199061.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 311122001131 its reverse (131100221113), we get a palindrome (442222222244).

The spelling of 311122001131 in words is "three hundred eleven billion, one hundred twenty-two million, one thousand, one hundred thirty-one".