1313173193 has 2 divisors, whose sum is σ = 1313173194. Its totient is φ = 1313173192.

The previous prime is 1313173189. The next prime is 1313173219. The reversal of 1313173193 is 3913713131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1192459024 + 120714169 = 34532^2 + 10987^2 .

It is an emirp because it is prime and its reverse (3913713131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1313173193 - 2² = 1313173189 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313173153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656586596 + 656586597.

It is an arithmetic number, because the mean of its divisors is an integer number (656586597).

Almost surely, 2^1313173193 is an apocalyptic number.

It is an amenable number.

1313173193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313173193 is an equidigital number, since it uses as much as digits as its factorization.

1313173193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5103, while the sum is 32.

The square root of 1313173193 is about 36237.7316205085. The cubic root of 1313173193 is about 1095.0669441916.

The spelling of 1313173193 in words is "one billion, three hundred thirteen million, one hundred seventy-three thousand, one hundred ninety-three".