1311012013012 has 24 divisors (see below), whose sum is σ = 2470787271176. Its totient is φ = 605074174848.

The previous prime is 1311012013009. The next prime is 1311012013043. The reversal of 1311012013012 is 2103102101131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19893409936 + 1291118603076 = 141044^2 + 1136274^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5322778 + ... + 5563630.

Almost surely, 2^{1311012013012} is an apocalyptic number.

It is an amenable number.

1311012013012 is a deficient number, since it is larger than the sum of its proper divisors (1159775258164).

1311012013012 is a wasteful number, since it uses less digits than its factorization.

1311012013012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345547 (or 345545 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1311012013012 its reverse (2103102101131), we get a palindrome (3414114114143).

The spelling of 1311012013012 in words is "one trillion, three hundred eleven billion, twelve million, thirteen thousand, twelve".