1311103512111 has 8 divisors (see below), whose sum is σ = 1804529565184. Its totient is φ = 845873233560.

The previous prime is 1311103512067. The next prime is 1311103512149. The reversal of 1311103512111 is 1112153011131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1311103512111 - 2¹⁴ = 1311103495727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311103512151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7048943521 + ... + 7048943706.

It is an arithmetic number, because the mean of its divisors is an integer number (225566195648).

Almost surely, 2^{1311103512111} is an apocalyptic number.

1311103512111 is a deficient number, since it is larger than the sum of its proper divisors (493426053073).

1311103512111 is a wasteful number, since it uses less digits than its factorization.

1311103512111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14097887261.

The product of its (nonzero) digits is 90, while the sum is 21.

Adding to 1311103512111 its reverse (1112153011131), we get a palindrome (2423256523242).

The spelling of 1311103512111 in words is "one trillion, three hundred eleven billion, one hundred three million, five hundred twelve thousand, one hundred eleven".