1311320144312 has 16 divisors (see below), whose sum is σ = 2458738654800. Its totient is φ = 655656503040.

The previous prime is 1311320144279. The next prime is 1311320144317. The reversal of 1311320144312 is 2134410231131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311320144317) 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 3 ways as a sum of consecutive naturals, for example, 1752989 + ... + 2386547.

It is an arithmetic number, because the mean of its divisors is an integer number (153671165925).

Almost surely, 2^{1311320144312} is an apocalyptic number.

It is an amenable number.

1311320144312 is a deficient number, since it is larger than the sum of its proper divisors (1147418510488).

1311320144312 is a wasteful number, since it uses less digits than its factorization.

1311320144312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892286 (or 892282 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 1311320144312 its reverse (2134410231131), we get a palindrome (3445730375443).

The spelling of 1311320144312 in words is "one trillion, three hundred eleven billion, three hundred twenty million, one hundred forty-four thousand, three hundred twelve".