311322133131 has 64 divisors (see below), whose sum is σ = 433818992640. Its totient is φ = 198467625600.

The previous prime is 311322133117. The next prime is 311322133153. The reversal of 311322133131 is 131331223113.

It is not a de Polignac number, because 311322133131 - 2¹¹ = 311322131083 is a prime.

It is a super-2 number, since 2×311322133131² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (311322133231) 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 63 ways as a sum of consecutive naturals, for example, 378276786 + ... + 378277608.

It is an arithmetic number, because the mean of its divisors is an integer number (6778421760).

Almost surely, 2^311322133131 is an apocalyptic number.

311322133131 is a deficient number, since it is larger than the sum of its proper divisors (122496859509).

311322133131 is a wasteful number, since it uses less digits than its factorization.

311322133131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296.

The product of its digits is 972, while the sum is 24.

Adding to 311322133131 its reverse (131331223113), we get a palindrome (442653356244).

The spelling of 311322133131 in words is "three hundred eleven billion, three hundred twenty-two million, one hundred thirty-three thousand, one hundred thirty-one".