1312311120212 has 24 divisors (see below), whose sum is σ = 2346849208704. Its totient is φ = 641799942912.

The previous prime is 1312311120167. The next prime is 1312311120217. The reversal of 1312311120212 is 2120211132131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312311120217) 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, 1839293 + ... + 2451044.

It is an arithmetic number, because the mean of its divisors is an integer number (97785383696).

Almost surely, 2^{1312311120212} is an apocalyptic number.

It is an amenable number.

1312311120212 is a deficient number, since it is larger than the sum of its proper divisors (1034538088492).

1312311120212 is a wasteful number, since it uses less digits than its factorization.

1312311120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4292015 (or 4292013 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1312311120212 its reverse (2120211132131), we get a palindrome (3432522252343).

The spelling of 1312311120212 in words is "one trillion, three hundred twelve billion, three hundred eleven million, one hundred twenty thousand, two hundred twelve".