311133320131212 has 96 divisors (see below), whose sum is σ = 814826459462400. Its totient is φ = 102662760096000.

The previous prime is 311133320131187. The next prime is 311133320131261. The reversal of 311133320131212 is 212131023331113.

311133320131212 is a `hidden beast` number, since 3 + 1 + 1 + 1 + 3 + 332 + 0 + 1 + 312 + 12 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21747262 + ... + 33093957.

It is an arithmetic number, because the mean of its divisors is an integer number (8487775619400).

Almost surely, 2^{311133320131212} is an apocalyptic number.

It is an amenable number.

311133320131212 is an abundant number, since it is smaller than the sum of its proper divisors (503693139331188).

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

311133320131212 is a wasteful number, since it uses less digits than its factorization.

311133320131212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54841764 (or 54841756 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

Adding to 311133320131212 its reverse (212131023331113), we get a palindrome (523264343462325).

The spelling of 311133320131212 in words is "three hundred eleven trillion, one hundred thirty-three billion, three hundred twenty million, one hundred thirty-one thousand, two hundred twelve".