319312229 has 2 divisors, whose sum is σ = 319312230. Its totient is φ = 319312228.

The previous prime is 319312199. The next prime is 319312237. The reversal of 319312229 is 922213913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272184004 + 47128225 = 16498^2 + 6865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-319312229 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 319312195 and 319312204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (319312529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159656114 + 159656115.

It is an arithmetic number, because the mean of its divisors is an integer number (159656115).

Almost surely, 2^319312229 is an apocalyptic number.

It is an amenable number.

319312229 is a deficient number, since it is larger than the sum of its proper divisors (1).

319312229 is an equidigital number, since it uses as much as digits as its factorization.

319312229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 32.

The square root of 319312229 is about 17869.3096956766. The cubic root of 319312229 is about 683.4999972351.

The spelling of 319312229 in words is "three hundred nineteen million, three hundred twelve thousand, two hundred twenty-nine".