313221089 has 2 divisors, whose sum is σ = 313221090. Its totient is φ = 313221088.

The previous prime is 313221079. The next prime is 313221119. The reversal of 313221089 is 980122313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 250177489 + 63043600 = 15817^2 + 7940^2 .

It is a cyclic number.

It is not a de Polignac number, because 313221089 - 2¹⁶ = 313155553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313221079) 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, 156610544 + 156610545.

It is an arithmetic number, because the mean of its divisors is an integer number (156610545).

Almost surely, 2^313221089 is an apocalyptic number.

It is an amenable number.

313221089 is a deficient number, since it is larger than the sum of its proper divisors (1).

313221089 is an equidigital number, since it uses as much as digits as its factorization.

313221089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 313221089 is about 17698.0532545249. The cubic root of 313221089 is about 679.1259596430.

The spelling of 313221089 in words is "three hundred thirteen million, two hundred twenty-one thousand, eighty-nine".