1312103011811 has 2 divisors, whose sum is σ = 1312103011812. Its totient is φ = 1312103011810.

The previous prime is 1312103011801. The next prime is 1312103011823. The reversal of 1312103011811 is 1181103012131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1312103011811 - 2¹⁰ = 1312103010787 is a prime.

It is a super-2 number, since 2×1312103011811² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1312103011801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656051505905 + 656051505906.

It is an arithmetic number, because the mean of its divisors is an integer number (656051505906).

Almost surely, 2^{1312103011811} is an apocalyptic number.

1312103011811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312103011811 is an equidigital number, since it uses as much as digits as its factorization.

1312103011811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 23.

Adding to 1312103011811 its reverse (1181103012131), we get a palindrome (2493206023942).

The spelling of 1312103011811 in words is "one trillion, three hundred twelve billion, one hundred three million, eleven thousand, eight hundred eleven".