313921219 has 2 divisors, whose sum is σ = 313921220. Its totient is φ = 313921218.

The previous prime is 313921183. The next prime is 313921313. The reversal of 313921219 is 912129313.

It is a weak prime.

It is an emirp because it is prime and its reverse (912129313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313921219 - 2⁹ = 313920707 is a prime.

It is a super-2 number, since 2×313921219² = 197093063476891922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (313921019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156960609 + 156960610.

It is an arithmetic number, because the mean of its divisors is an integer number (156960610).

Almost surely, 2^313921219 is an apocalyptic number.

313921219 is a deficient number, since it is larger than the sum of its proper divisors (1).

313921219 is an equidigital number, since it uses as much as digits as its factorization.

313921219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 31.

The square root of 313921219 is about 17717.8220727041. The cubic root of 313921219 is about 679.6315903761.

The spelling of 313921219 in words is "three hundred thirteen million, nine hundred twenty-one thousand, two hundred nineteen".