1311311463031 has 2 divisors, whose sum is σ = 1311311463032. Its totient is φ = 1311311463030.

The previous prime is 1311311462947. The next prime is 1311311463083. The reversal of 1311311463031 is 1303641131131.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1303641131131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1311311463031 - 2¹⁵ = 1311311430263 is a prime.

It is a super-2 number, since 2×1311311463031² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311311463331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655655731515 + 655655731516.

It is an arithmetic number, because the mean of its divisors is an integer number (655655731516).

Almost surely, 2^{1311311463031} is an apocalyptic number.

1311311463031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311311463031 is an equidigital number, since it uses as much as digits as its factorization.

1311311463031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

Adding to 1311311463031 its reverse (1303641131131), we get a palindrome (2614952594162).

The spelling of 1311311463031 in words is "one trillion, three hundred eleven billion, three hundred eleven million, four hundred sixty-three thousand, thirty-one".