313889 has 2 divisors, whose sum is σ = 313890. Its totient is φ = 313888.

The previous prime is 313883. The next prime is 313897. The reversal of 313889 is 988313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313600 + 289 = 560^2 + 17^2 .

It is an emirp because it is prime and its reverse (988313) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156944 + 156945.

It is an arithmetic number, because the mean of its divisors is an integer number (156945).

2³¹³⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

313889 is a deficient number, since it is larger than the sum of its proper divisors (1).

313889 is an equidigital number, since it uses as much as digits as its factorization.

313889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 32.

The square root of 313889 is about 560.2579762931. The cubic root of 313889 is about 67.9608338471.

The spelling of 313889 in words is "three hundred thirteen thousand, eight hundred eighty-nine".