319185923213 has 2 divisors, whose sum is σ = 319185923214. Its totient is φ = 319185923212.

The previous prime is 319185923171. The next prime is 319185923249. The reversal of 319185923213 is 312329581913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190565425444 + 128620497769 = 436538^2 + 358637^2 .

It is a cyclic number.

It is not a de Polignac number, because 319185923213 - 2⁶ = 319185923149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (319185920213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159592961606 + 159592961607.

It is an arithmetic number, because the mean of its divisors is an integer number (159592961607).

Almost surely, 2^319185923213 is an apocalyptic number.

It is an amenable number.

319185923213 is a deficient number, since it is larger than the sum of its proper divisors (1).

319185923213 is an equidigital number, since it uses as much as digits as its factorization.

319185923213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 47.

The spelling of 319185923213 in words is "three hundred nineteen billion, one hundred eighty-five million, nine hundred twenty-three thousand, two hundred thirteen".