1311213623126 has 48 divisors (see below), whose sum is σ = 2280983785920. Its totient is φ = 560429994960.

The previous prime is 1311213623123. The next prime is 1311213623207. The reversal of 1311213623126 is 6213263121131.

It is a junction number, because it is equal to n+sod(n) for n = 1311213623092 and 1311213623101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311213623123) 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 23 ways as a sum of consecutive naturals, for example, 268160 + ... + 1641443.

It is an arithmetic number, because the mean of its divisors is an integer number (47520495540).

Almost surely, 2^{1311213623126} is an apocalyptic number.

1311213623126 is a deficient number, since it is larger than the sum of its proper divisors (969770162794).

1311213623126 is a wasteful number, since it uses less digits than its factorization.

1311213623126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909721 (or 1909698 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

Adding to 1311213623126 its reverse (6213263121131), we get a palindrome (7524476744257).

The spelling of 1311213623126 in words is "one trillion, three hundred eleven billion, two hundred thirteen million, six hundred twenty-three thousand, one hundred twenty-six".