222831313 has 2 divisors, whose sum is σ = 222831314. Its totient is φ = 222831312.

The previous prime is 222831311. The next prime is 222831391. The reversal of 222831313 is 313138222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218803264 + 4028049 = 14792^2 + 2007^2 .

It is a cyclic number.

It is not a de Polignac number, because 222831313 - 2¹ = 222831311 is a prime.

Together with 222831311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (222831311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111415656 + 111415657.

It is an arithmetic number, because the mean of its divisors is an integer number (111415657).

Almost surely, 2^222831313 is an apocalyptic number.

It is an amenable number.

222831313 is a deficient number, since it is larger than the sum of its proper divisors (1).

222831313 is an equidigital number, since it uses as much as digits as its factorization.

222831313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 222831313 is about 14927.5353960391. The cubic root of 222831313 is about 606.2597551411.

Adding to 222831313 its reverse (313138222), we get a palindrome (535969535).

The spelling of 222831313 in words is "two hundred twenty-two million, eight hundred thirty-one thousand, three hundred thirteen".