1311113273 has 2 divisors, whose sum is σ = 1311113274. Its totient is φ = 1311113272.

The previous prime is 1311113233. The next prime is 1311113299. The reversal of 1311113273 is 3723111131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1254080569 + 57032704 = 35413^2 + 7552^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311113273 - 2¹⁴ = 1311096889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311113233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655556636 + 655556637.

It is an arithmetic number, because the mean of its divisors is an integer number (655556637).

Almost surely, 2^1311113273 is an apocalyptic number.

It is an amenable number.

1311113273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311113273 is an equidigital number, since it uses as much as digits as its factorization.

1311113273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 378, while the sum is 23.

The square root of 1311113273 is about 36209.2981566890. The cubic root of 1311113273 is about 1094.4940492525.

The spelling of 1311113273 in words is "one billion, three hundred eleven million, one hundred thirteen thousand, two hundred seventy-three".