1311323020312 has 16 divisors (see below), whose sum is σ = 2460751002360. Its totient is φ = 655122753024.

The previous prime is 1311323020309. The next prime is 1311323020313. The reversal of 1311323020312 is 2130203231131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311323020313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67334298 + ... + 67353769.

Almost surely, 2^{1311323020312} is an apocalyptic number.

It is an amenable number.

1311323020312 is a deficient number, since it is larger than the sum of its proper divisors (1149427982048).

1311323020312 is a wasteful number, since it uses less digits than its factorization.

1311323020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134689290 (or 134689286 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1311323020312 its reverse (2130203231131), we get a palindrome (3441526251443).

The spelling of 1311323020312 in words is "one trillion, three hundred eleven billion, three hundred twenty-three million, twenty thousand, three hundred twelve".