1313040193 has 2 divisors, whose sum is σ = 1313040194. Its totient is φ = 1313040192.

The previous prime is 1313040191. The next prime is 1313040233. The reversal of 1313040193 is 3910403131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1024448049 + 288592144 = 32007^2 + 16988^2 .

It is an emirp because it is prime and its reverse (3910403131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1313040193 - 2¹ = 1313040191 is a prime.

Together with 1313040191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1313040191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656520096 + 656520097.

It is an arithmetic number, because the mean of its divisors is an integer number (656520097).

Almost surely, 2^1313040193 is an apocalyptic number.

It is an amenable number.

1313040193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313040193 is an equidigital number, since it uses as much as digits as its factorization.

1313040193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 1313040193 is about 36235.8964702131. The cubic root of 1313040193 is about 1095.0299729777.

The spelling of 1313040193 in words is "one billion, three hundred thirteen million, forty thousand, one hundred ninety-three".