1311230655044 has 12 divisors (see below), whose sum is σ = 2294830127100. Its totient is φ = 655564904448.

The previous prime is 1311230655019. The next prime is 1311230655071. The reversal of 1311230655044 is 4405560321131.

It can be written as a sum of positive squares in 2 ways, for example, as 265802113600 + 1045428541444 = 515560^2 + 1022462^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1311230654995 and 1311230655013.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12547229 + ... + 12651300.

It is an arithmetic number, because the mean of its divisors is an integer number (191235843925).

Almost surely, 2^{1311230655044} is an apocalyptic number.

It is an amenable number.

1311230655044 is a deficient number, since it is larger than the sum of its proper divisors (983599472056).

1311230655044 is a wasteful number, since it uses less digits than its factorization.

1311230655044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25211542 (or 25211540 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 1311230655044 its reverse (4405560321131), we get a palindrome (5716790976175).

The spelling of 1311230655044 in words is "one trillion, three hundred eleven billion, two hundred thirty million, six hundred fifty-five thousand, forty-four".