1311246012204 has 36 divisors (see below), whose sum is σ = 3314774176896. Its totient is φ = 437050929888.

The previous prime is 1311246012161. The next prime is 1311246012211. The reversal of 1311246012204 is 4022106421131.

1311246012204 is a `hidden beast` number, since 1 + 3 + 11 + 24 + 601 + 2 + 20 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1311246012204² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 778539 + ... + 1796834.

Almost surely, 2^{1311246012204} is an apocalyptic number.

It is an amenable number.

1311246012204 is an abundant number, since it is smaller than the sum of its proper divisors (2003528164692).

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

1311246012204 is a wasteful number, since it uses less digits than its factorization.

1311246012204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2589526 (or 2589521 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The spelling of 1311246012204 in words is "one trillion, three hundred eleven billion, two hundred forty-six million, twelve thousand, two hundred four".