1312101111311 has 4 divisors (see below), whose sum is σ = 1312117669032. Its totient is φ = 1312084553592.

The previous prime is 1312101111301. The next prime is 1312101111367. The reversal of 1312101111311 is 1131111012131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1312101111311 - 2³⁴ = 1294921242127 is a prime.

It is a super-2 number, since 2×1312101111311² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312101111311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312101111301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8159420 + ... + 8318673.

It is an arithmetic number, because the mean of its divisors is an integer number (328029417258).

Almost surely, 2^{1312101111311} is an apocalyptic number.

1312101111311 is a deficient number, since it is larger than the sum of its proper divisors (16557721).

1312101111311 is an equidigital number, since it uses as much as digits as its factorization.

1312101111311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16557720.

The product of its (nonzero) digits is 18, while the sum is 17.

Adding to 1312101111311 its reverse (1131111012131), we get a palindrome (2443212123442).

The spelling of 1312101111311 in words is "one trillion, three hundred twelve billion, one hundred one million, one hundred eleven thousand, three hundred eleven".