1311412273 has 2 divisors, whose sum is σ = 1311412274. Its totient is φ = 1311412272.

The previous prime is 1311412259. The next prime is 1311412309. The reversal of 1311412273 is 3722141131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 954315664 + 357096609 = 30892^2 + 18897^2 .

It is an emirp because it is prime and its reverse (3722141131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311412273 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311410273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655706136 + 655706137.

It is an arithmetic number, because the mean of its divisors is an integer number (655706137).

Almost surely, 2^1311412273 is an apocalyptic number.

It is an amenable number.

1311412273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311412273 is an equidigital number, since it uses as much as digits as its factorization.

1311412273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 25.

The square root of 1311412273 is about 36213.4266950809. The cubic root of 1311412273 is about 1094.5772428900.

The spelling of 1311412273 in words is "one billion, three hundred eleven million, four hundred twelve thousand, two hundred seventy-three".