1311022113403 has 2 divisors, whose sum is σ = 1311022113404. Its totient is φ = 1311022113402.

The previous prime is 1311022113389. The next prime is 1311022113449. The reversal of 1311022113403 is 3043112201131.

It is a weak prime.

It is an emirp because it is prime and its reverse (3043112201131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1311022113403 - 2¹⁷ = 1311021982331 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311022113463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655511056701 + 655511056702.

It is an arithmetic number, because the mean of its divisors is an integer number (655511056702).

Almost surely, 2^{1311022113403} is an apocalyptic number.

1311022113403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311022113403 is an equidigital number, since it uses as much as digits as its factorization.

1311022113403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1311022113403 its reverse (3043112201131), we get a palindrome (4354134314534).

The spelling of 1311022113403 in words is "one trillion, three hundred eleven billion, twenty-two million, one hundred thirteen thousand, four hundred three".