1311241356042 has 16 divisors (see below), whose sum is σ = 2622614555712. Its totient is φ = 437058478080.

The previous prime is 1311241356037. The next prime is 1311241356059. The reversal of 1311241356042 is 2406531421131.

It is a junction number, because it is equal to n+sod(n) for n = 1311241355994 and 1311241356012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5363959 + ... + 5603082.

It is an arithmetic number, because the mean of its divisors is an integer number (163913409732).

Almost surely, 2^{1311241356042} is an apocalyptic number.

1311241356042 is an abundant number, since it is smaller than the sum of its proper divisors (1311373199670).

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

1311241356042 is a wasteful number, since it uses less digits than its factorization.

1311241356042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10986973.

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 1311241356042 its reverse (2406531421131), we get a palindrome (3717772777173).

The spelling of 1311241356042 in words is "one trillion, three hundred eleven billion, two hundred forty-one million, three hundred fifty-six thousand, forty-two".