1311230126051 has 2 divisors, whose sum is σ = 1311230126052. Its totient is φ = 1311230126050.

The previous prime is 1311230126039. The next prime is 1311230126123. The reversal of 1311230126051 is 1506210321131.

It is a weak prime.

It is an emirp because it is prime and its reverse (1506210321131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1311230126051 - 2¹⁸ = 1311229863907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1311230126051.

It is not a weakly prime, because it can be changed into another prime (1311230326051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655615063025 + 655615063026.

It is an arithmetic number, because the mean of its divisors is an integer number (655615063026).

Almost surely, 2^{1311230126051} is an apocalyptic number.

1311230126051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311230126051 is an equidigital number, since it uses as much as digits as its factorization.

1311230126051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 1311230126051 its reverse (1506210321131), we get a palindrome (2817440447182).

The spelling of 1311230126051 in words is "one trillion, three hundred eleven billion, two hundred thirty million, one hundred twenty-six thousand, fifty-one".