1311201110131 has 8 divisors (see below), whose sum is σ = 1442222710128. Its totient is φ = 1192001008000.

The previous prime is 1311201110123. The next prime is 1311201110143. The reversal of 1311201110131 is 1310111021131.

It is not a de Polignac number, because 1311201110131 - 2³ = 1311201110123 is a prime.

It is a super-2 number, since 2×1311201110131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311201110101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492561070 + ... + 492563731.

It is an arithmetic number, because the mean of its divisors is an integer number (180277838766).

Almost surely, 2^{1311201110131} is an apocalyptic number.

1311201110131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1311201110131 is a deficient number, since it is larger than the sum of its proper divisors (131021599997).

1311201110131 is an frugal number, since it uses more digits than its factorization.

1311201110131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985124834 (or 985124812 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 1311201110131 its reverse (1310111021131), we get a palindrome (2621312131262).

The spelling of 1311201110131 in words is "one trillion, three hundred eleven billion, two hundred one million, one hundred ten thousand, one hundred thirty-one".