1311044135502 has 16 divisors (see below), whose sum is σ = 2633639323392. Its totient is φ = 435089536440.

The previous prime is 1311044135501. The next prime is 1311044135509. The reversal of 1311044135502 is 2055314401131.

It is a self number, because there is not a number n which added to its sum of digits gives 1311044135502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311044135501) 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 7 ways as a sum of consecutive naturals, for example, 481292374 + ... + 481295097.

It is an arithmetic number, because the mean of its divisors is an integer number (164602457712).

Almost surely, 2^{1311044135502} is an apocalyptic number.

1311044135502 is an abundant number, since it is smaller than the sum of its proper divisors (1322595187890).

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

1311044135502 is a wasteful number, since it uses less digits than its factorization.

1311044135502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962587703.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 1311044135502 its reverse (2055314401131), we get a palindrome (3366358536633).

The spelling of 1311044135502 in words is "one trillion, three hundred eleven billion, forty-four million, one hundred thirty-five thousand, five hundred two".