1311423248816 has 20 divisors (see below), whose sum is σ = 2690346224232. Its totient is φ = 617140352256.

The previous prime is 1311423248813. The next prime is 1311423248843. The reversal of 1311423248816 is 6188423241131.

It is a happy number.

It is a super-2 number, since 2×1311423248816² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311423248813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2410704230 + ... + 2410704773.

Almost surely, 2^{1311423248816} is an apocalyptic number.

1311423248816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1311423248816 is an abundant number, since it is smaller than the sum of its proper divisors (1378922975416).

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

1311423248816 is a wasteful number, since it uses less digits than its factorization.

1311423248816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4821409028 (or 4821409022 counting only the distinct ones).

The product of its digits is 221184, while the sum is 44.

Adding to 1311423248816 its reverse (6188423241131), we get a palindrome (7499846489947).

The spelling of 1311423248816 in words is "one trillion, three hundred eleven billion, four hundred twenty-three million, two hundred forty-eight thousand, eight hundred sixteen".