1311244013013 has 64 divisors (see below), whose sum is σ = 1961433169920. Its totient is φ = 772280537600.

The previous prime is 1311244013011. The next prime is 1311244013017. The reversal of 1311244013013 is 3103104421131.

It is a happy number.

It is not a de Polignac number, because 1311244013013 - 2¹ = 1311244013011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311244013011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 633756343 + ... + 633758411.

It is an arithmetic number, because the mean of its divisors is an integer number (30647393280).

Almost surely, 2^{1311244013013} is an apocalyptic number.

It is an amenable number.

1311244013013 is a deficient number, since it is larger than the sum of its proper divisors (650189156907).

1311244013013 is a wasteful number, since it uses less digits than its factorization.

1311244013013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3730.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 1311244013013 its reverse (3103104421131), we get a palindrome (4414348434144).

The spelling of 1311244013013 in words is "one trillion, three hundred eleven billion, two hundred forty-four million, thirteen thousand, thirteen".