313921019 has 2 divisors, whose sum is σ = 313921020. Its totient is φ = 313921018.

The previous prime is 313921009. The next prime is 313921039. The reversal of 313921019 is 910129313.

It is a weak prime.

It is an emirp because it is prime and its reverse (910129313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313921019 - 2¹⁶ = 313855483 is a prime.

It is a super-2 number, since 2×313921019² = 197092812339996722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 313920982 and 313921000.

It is not a weakly prime, because it can be changed into another prime (313921009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156960509 + 156960510.

It is an arithmetic number, because the mean of its divisors is an integer number (156960510).

Almost surely, 2^313921019 is an apocalyptic number.

313921019 is a deficient number, since it is larger than the sum of its proper divisors (1).

313921019 is an equidigital number, since it uses as much as digits as its factorization.

313921019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 313921019 is about 17717.8164286686. The cubic root of 313921019 is about 679.6314460444.

The spelling of 313921019 in words is "three hundred thirteen million, nine hundred twenty-one thousand, nineteen".