1312131230111 has 6 divisors (see below), whose sum is σ = 1420828491960. Its totient is φ = 1211198058408.

The previous prime is 1312131230107. The next prime is 1312131230233. The reversal of 1312131230111 is 1110321312131.

It is not a de Polignac number, because 1312131230111 - 2² = 1312131230107 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 (1312131236111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3882044891 + ... + 3882045228.

It is an arithmetic number, because the mean of its divisors is an integer number (236804748660).

Almost surely, 2^{1312131230111} is an apocalyptic number.

1312131230111 is a deficient number, since it is larger than the sum of its proper divisors (108697261849).

1312131230111 is an equidigital number, since it uses as much as digits as its factorization.

1312131230111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7764090145 (or 7764090132 counting only the distinct ones).

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

Adding to 1312131230111 its reverse (1110321312131), we get a palindrome (2422452542242).

The spelling of 1312131230111 in words is "one trillion, three hundred twelve billion, one hundred thirty-one million, two hundred thirty thousand, one hundred eleven".