1311103131121 has 16 divisors (see below), whose sum is σ = 1548211130368. Its totient is φ = 1086516018000.

The previous prime is 1311103131089. The next prime is 1311103131179. The reversal of 1311103131121 is 1211313011131.

It is not a de Polignac number, because 1311103131121 - 2⁵ = 1311103131089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311103191121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2646315 + ... + 3102448.

It is an arithmetic number, because the mean of its divisors is an integer number (96763195648).

Almost surely, 2^{1311103131121} is an apocalyptic number.

It is an amenable number.

1311103131121 is a deficient number, since it is larger than the sum of its proper divisors (237107999247).

1311103131121 is a wasteful number, since it uses less digits than its factorization.

1311103131121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5749852.

The product of its (nonzero) digits is 54, while the sum is 19.

Adding to 1311103131121 its reverse (1211313011131), we get a palindrome (2522416142252).

The spelling of 1311103131121 in words is "one trillion, three hundred eleven billion, one hundred three million, one hundred thirty-one thousand, one hundred twenty-one".