319723193 has 2 divisors, whose sum is σ = 319723194. Its totient is φ = 319723192.

The previous prime is 319723147. The next prime is 319723237. The reversal of 319723193 is 391327913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312476329 + 7246864 = 17677^2 + 2692^2 .

It is a cyclic number.

It is not a de Polignac number, because 319723193 - 2¹² = 319719097 is a prime.

It is not a weakly prime, because it can be changed into another prime (319723123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159861596 + 159861597.

It is an arithmetic number, because the mean of its divisors is an integer number (159861597).

Almost surely, 2^319723193 is an apocalyptic number.

It is an amenable number.

319723193 is a deficient number, since it is larger than the sum of its proper divisors (1).

319723193 is an equidigital number, since it uses as much as digits as its factorization.

319723193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 38.

The square root of 319723193 is about 17880.8051552496. The cubic root of 319723193 is about 683.7930995629.

The spelling of 319723193 in words is "three hundred nineteen million, seven hundred twenty-three thousand, one hundred ninety-three".