1311230131121 has 8 divisors (see below), whose sum is σ = 1333317334944. Its totient is φ = 1289292671520.

The previous prime is 1311230131033. The next prime is 1311230131129. The reversal of 1311230131121 is 1211310321131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311230131121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311230131093 and 1311230131102.

It is not an unprimeable number, because it can be changed into a prime (1311230131129) 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, 37418396 + ... + 37453421.

It is an arithmetic number, because the mean of its divisors is an integer number (166664666868).

Almost surely, 2^{1311230131121} is an apocalyptic number.

It is an amenable number.

1311230131121 is a deficient number, since it is larger than the sum of its proper divisors (22087203823).

1311230131121 is an equidigital number, since it uses as much as digits as its factorization.

1311230131121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74872111.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1311230131121 its reverse (1211310321131), we get a palindrome (2522540452252).

The spelling of 1311230131121 in words is "one trillion, three hundred eleven billion, two hundred thirty million, one hundred thirty-one thousand, one hundred twenty-one".