319797913 has 2 divisors, whose sum is σ = 319797914. Its totient is φ = 319797912.

The previous prime is 319797883. The next prime is 319797943.

319797913 is nontrivially palindromic in base 10.

It is a balanced prime because it is at equal distance from previous prime (319797883) and next prime (319797943).

It can be written as a sum of positive squares in only one way, i.e., 250525584 + 69272329 = 15828^2 + 8323^2 .

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-319797913 is a prime.

It is not a weakly prime, because it can be changed into another prime (319797943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159898956 + 159898957.

It is an arithmetic number, because the mean of its divisors is an integer number (159898957).

Almost surely, 2^319797913 is an apocalyptic number.

It is an amenable number.

319797913 is a deficient number, since it is larger than the sum of its proper divisors (1).

319797913 is an equidigital number, since it uses as much as digits as its factorization.

319797913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 321489, while the sum is 49.

The square root of 319797913 is about 17882.8944245611. The cubic root of 319797913 is about 683.8463633880.

The spelling of 319797913 in words is "three hundred nineteen million, seven hundred ninety-seven thousand, nine hundred thirteen".