1313173219 has 2 divisors, whose sum is σ = 1313173220. Its totient is φ = 1313173218.

The previous prime is 1313173193. The next prime is 1313173241. The reversal of 1313173219 is 9123713131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313173219 is a prime.

It is a super-2 number, since 2×1313173219² = 3448847806197643922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1313173819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656586609 + 656586610.

It is an arithmetic number, because the mean of its divisors is an integer number (656586610).

Almost surely, 2^1313173219 is an apocalyptic number.

1313173219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313173219 is an equidigital number, since it uses as much as digits as its factorization.

1313173219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 31.

The square root of 1313173219 is about 36237.7319792506. The cubic root of 1313173219 is about 1095.0669514188.

The spelling of 1313173219 in words is "one billion, three hundred thirteen million, one hundred seventy-three thousand, two hundred nineteen".