311323231122012 has 96 divisors (see below), whose sum is σ = 872577624979200. Its totient is φ = 95655501999936.

The previous prime is 311323231122011. The next prime is 311323231122023. The reversal of 311323231122012 is 210221132323113.

311323231122012 is a `hidden beast` number, since 3 + 1 + 1 + 323 + 2 + 311 + 2 + 20 + 1 + 2 = 666.

It is a super-2 number, since 2×311323231122012² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311323231122011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2050153458 + ... + 2050305305.

It is an arithmetic number, because the mean of its divisors is an integer number (9089350260200).

Almost surely, 2^{311323231122012} is an apocalyptic number.

It is an amenable number.

311323231122012 is an abundant number, since it is smaller than the sum of its proper divisors (561254393857188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311323231122012 is a wasteful number, since it uses less digits than its factorization.

311323231122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100458832 (or 4100458824 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 311323231122012 its reverse (210221132323113), we get a palindrome (521544363445125).

The spelling of 311323231122012 in words is "three hundred eleven trillion, three hundred twenty-three billion, two hundred thirty-one million, one hundred twenty-two thousand, twelve".