1311320111129 has 16 divisors (see below), whose sum is σ = 1531707024000. Its totient is φ = 1122172671312.

The previous prime is 1311320111077. The next prime is 1311320111141. The reversal of 1311320111129 is 9211110231131.

It is not a de Polignac number, because 1311320111129 - 2²⁸ = 1311051675673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1311320111098 and 1311320111107.

It is not an unprimeable number, because it can be changed into a prime (1311320111149) 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 15 ways as a sum of consecutive naturals, for example, 2875802 + ... + 3300435.

It is an arithmetic number, because the mean of its divisors is an integer number (95731689000).

Almost surely, 2^{1311320111129} is an apocalyptic number.

It is an amenable number.

1311320111129 is a deficient number, since it is larger than the sum of its proper divisors (220386912871).

1311320111129 is an frugal number, since it uses more digits than its factorization.

1311320111129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6176877 (or 6176863 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 26.

The spelling of 1311320111129 in words is "one trillion, three hundred eleven billion, three hundred twenty million, one hundred eleven thousand, one hundred twenty-nine".