1311341293 has 2 divisors, whose sum is σ = 1311341294. Its totient is φ = 1311341292.

The previous prime is 1311341243. The next prime is 1311341327. The reversal of 1311341293 is 3921431131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1183153609 + 128187684 = 34397^2 + 11322^2 .

It is an emirp because it is prime and its reverse (3921431131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311341293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311341203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655670646 + 655670647.

It is an arithmetic number, because the mean of its divisors is an integer number (655670647).

Almost surely, 2^1311341293 is an apocalyptic number.

It is an amenable number.

1311341293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311341293 is an equidigital number, since it uses as much as digits as its factorization.

1311341293 is an evil number, because the sum of its binary digits is even.

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

The square root of 1311341293 is about 36212.4466585731. The cubic root of 1311341293 is about 1094.5574945886.

The spelling of 1311341293 in words is "one billion, three hundred eleven million, three hundred forty-one thousand, two hundred ninety-three".