313238369 has 2 divisors, whose sum is σ = 313238370. Its totient is φ = 313238368.

The previous prime is 313238329. The next prime is 313238371. The reversal of 313238369 is 963832313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309337744 + 3900625 = 17588^2 + 1975^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313238369 is a prime.

It is a super-2 number, since 2×313238369² = 196236551627560322, which contains 22 as substring.

Together with 313238371, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313238329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156619184 + 156619185.

It is an arithmetic number, because the mean of its divisors is an integer number (156619185).

Almost surely, 2^313238369 is an apocalyptic number.

It is an amenable number.

313238369 is a deficient number, since it is larger than the sum of its proper divisors (1).

313238369 is an equidigital number, since it uses as much as digits as its factorization.

313238369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 38.

The square root of 313238369 is about 17698.5414370789. The cubic root of 313238369 is about 679.1384482452.

The spelling of 313238369 in words is "three hundred thirteen million, two hundred thirty-eight thousand, three hundred sixty-nine".