1311201103124 has 24 divisors (see below), whose sum is σ = 2570856220128. Its totient is φ = 579892379040.

The previous prime is 1311201103123. The next prime is 1311201103139. The reversal of 1311201103124 is 4213011021131.

It is a junction number, because it is equal to n+sod(n) for n = 1311201103096 and 1311201103105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311201103123) 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, 402701414 + ... + 402704669.

It is an arithmetic number, because the mean of its divisors is an integer number (107119009172).

Almost surely, 2^{1311201103124} is an apocalyptic number.

It is an amenable number.

1311201103124 is a deficient number, since it is larger than the sum of its proper divisors (1259655117004).

1311201103124 is a wasteful number, since it uses less digits than its factorization.

1311201103124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805406135 (or 805406133 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1311201103124 its reverse (4213011021131), we get a palindrome (5524212124255).

The spelling of 1311201103124 in words is "one trillion, three hundred eleven billion, two hundred one million, one hundred three thousand, one hundred twenty-four".