284578313 has 2 divisors, whose sum is σ = 284578314. Its totient is φ = 284578312.

The previous prime is 284578289. The next prime is 284578319. The reversal of 284578313 is 313875482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 264615289 + 19963024 = 16267^2 + 4468^2 .

It is a cyclic number.

It is not a de Polignac number, because 284578313 - 2¹⁰ = 284577289 is a prime.

It is not a weakly prime, because it can be changed into another prime (284578319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142289156 + 142289157.

It is an arithmetic number, because the mean of its divisors is an integer number (142289157).

Almost surely, 2^284578313 is an apocalyptic number.

It is an amenable number.

284578313 is a deficient number, since it is larger than the sum of its proper divisors (1).

284578313 is an equidigital number, since it uses as much as digits as its factorization.

284578313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 41.

The square root of 284578313 is about 16869.4491018527. The cubic root of 284578313 is about 657.7597083013.

The spelling of 284578313 in words is "two hundred eighty-four million, five hundred seventy-eight thousand, three hundred thirteen".