313304389 has 2 divisors, whose sum is σ = 313304390. Its totient is φ = 313304388.

The previous prime is 313304377. The next prime is 313304399. The reversal of 313304389 is 983403313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182385025 + 130919364 = 13505^2 + 11442^2 .

It is an emirp because it is prime and its reverse (983403313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313304389 - 2¹⁷ = 313173317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313304399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156652194 + 156652195.

It is an arithmetic number, because the mean of its divisors is an integer number (156652195).

Almost surely, 2^313304389 is an apocalyptic number.

It is an amenable number.

313304389 is a deficient number, since it is larger than the sum of its proper divisors (1).

313304389 is an equidigital number, since it uses as much as digits as its factorization.

313304389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 313304389 is about 17700.4064642595. The cubic root of 313304389 is about 679.1861579930.

The spelling of 313304389 in words is "three hundred thirteen million, three hundred four thousand, three hundred eighty-nine".