319144013 has 2 divisors, whose sum is σ = 319144014. Its totient is φ = 319144012.

The previous prime is 319143991. The next prime is 319144019. The reversal of 319144013 is 310441913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 298149289 + 20994724 = 17267^2 + 4582^2 .

It is a cyclic number.

It is not a de Polignac number, because 319144013 - 2⁸ = 319143757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (319144019) 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, 159572006 + 159572007.

It is an arithmetic number, because the mean of its divisors is an integer number (159572007).

Almost surely, 2^319144013 is an apocalyptic number.

It is an amenable number.

319144013 is a deficient number, since it is larger than the sum of its proper divisors (1).

319144013 is an equidigital number, since it uses as much as digits as its factorization.

319144013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 319144013 is about 17864.6022345867. The cubic root of 319144013 is about 683.3799518992.

Adding to 319144013 its reverse (310441913), we get a palindrome (629585926).

The spelling of 319144013 in words is "three hundred nineteen million, one hundred forty-four thousand, thirteen".