222231313 has 6 divisors (see below), whose sum is σ = 232314194. Its totient is φ = 212568576.

The previous prime is 222231311. The next prime is 222231329. The reversal of 222231313 is 313132222.

It can be written as a sum of positive squares in only one way, i.e., 217356049 + 4875264 = 14743^2 + 2208^2 .

It is not a de Polignac number, because 222231313 - 2¹ = 222231311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222231311) 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 in 5 ways as a sum of consecutive naturals, for example, 209520 + ... + 210577.

Almost surely, 2^222231313 is an apocalyptic number.

222231313 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

222231313 is a deficient number, since it is larger than the sum of its proper divisors (10082881).

222231313 is an equidigital number, since it uses as much as digits as its factorization.

222231313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420143 (or 420120 counting only the distinct ones).

The product of its digits is 432, while the sum is 19.

The square root of 222231313 is about 14907.4247608365. The cubic root of 222231313 is about 605.7151236845.

Adding to 222231313 its reverse (313132222), we get a palindrome (535363535).

Subtracting 222231313 from its reverse (313132222), we obtain a palindrome (90900909).

The spelling of 222231313 in words is "two hundred twenty-two million, two hundred thirty-one thousand, three hundred thirteen".