319747913 has 2 divisors, whose sum is σ = 319747914. Its totient is φ = 319747912.

The previous prime is 319747907. The next prime is 319747937.

319747913 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313537849 + 6210064 = 17707^2 + 2492^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 319747913 - 2¹² = 319743817 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (319746913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159873956 + 159873957.

It is an arithmetic number, because the mean of its divisors is an integer number (159873957).

Almost surely, 2^319747913 is an apocalyptic number.

It is an amenable number.

319747913 is a deficient number, since it is larger than the sum of its proper divisors (1).

319747913 is an equidigital number, since it uses as much as digits as its factorization.

319747913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 44.

The square root of 319747913 is about 17881.4963859292. The cubic root of 319747913 is about 683.8107220252.

The spelling of 319747913 in words is "three hundred nineteen million, seven hundred forty-seven thousand, nine hundred thirteen".