1311235134042 has 8 divisors (see below), whose sum is σ = 2622470268096. Its totient is φ = 437078378012.

The previous prime is 1311235133977. The next prime is 1311235134049. The reversal of 1311235134042 is 2404315321131.

It is a sphenic number, since it is the product of 3 distinct primes.

1311235134042 is an admirable number.

It is a super-2 number, since 2×1311235134042² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311235134049) 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, 109269594498 + ... + 109269594509.

It is an arithmetic number, because the mean of its divisors is an integer number (327808783512).

Almost surely, 2^{1311235134042} is an apocalyptic number.

1311235134042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1311235134042 is a wasteful number, since it uses less digits than its factorization.

1311235134042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218539189012.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 1311235134042 in words is "one trillion, three hundred eleven billion, two hundred thirty-five million, one hundred thirty-four thousand, forty-two".