1311241356016 has 80 divisors (see below), whose sum is σ = 2653269242400. Its totient is φ = 627205607424.

The previous prime is 1311241356013. The next prime is 1311241356037. The reversal of 1311241356016 is 6106531421131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311241356013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9361636 + ... + 9500668.

It is an arithmetic number, because the mean of its divisors is an integer number (33165865530).

Almost surely, 2^{1311241356016} is an apocalyptic number.

1311241356016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1311241356016 is an abundant number, since it is smaller than the sum of its proper divisors (1342027886384).

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

1311241356016 is a wasteful number, since it uses less digits than its factorization.

1311241356016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139346 (or 139340 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

Adding to 1311241356016 its reverse (6106531421131), we get a palindrome (7417772777147).

The spelling of 1311241356016 in words is "one trillion, three hundred eleven billion, two hundred forty-one million, three hundred fifty-six thousand, sixteen".