319122109 has 2 divisors, whose sum is σ = 319122110. Its totient is φ = 319122108.

The previous prime is 319122059. The next prime is 319122127. The reversal of 319122109 is 901221913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315595225 + 3526884 = 17765^2 + 1878^2 .

It is a cyclic number.

It is not a de Polignac number, because 319122109 - 2¹⁵ = 319089341 is a prime.

It is equal to p_17230357 and since 319122109 and 17230357 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (319122149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159561054 + 159561055.

It is an arithmetic number, because the mean of its divisors is an integer number (159561055).

Almost surely, 2^319122109 is an apocalyptic number.

It is an amenable number.

319122109 is a deficient number, since it is larger than the sum of its proper divisors (1).

319122109 is an equidigital number, since it uses as much as digits as its factorization.

319122109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 319122109 is about 17863.9891681561. The cubic root of 319122109 is about 683.3643172678.

The spelling of 319122109 in words is "three hundred nineteen million, one hundred twenty-two thousand, one hundred nine".