223196681 has 2 divisors, whose sum is σ = 223196682. Its totient is φ = 223196680.

The previous prime is 223196671. The next prime is 223196707. The reversal of 223196681 is 186691322.

It is a happy number.

223196681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152300281 + 70896400 = 12341^2 + 8420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223196681 is a prime.

It is a super-3 number, since 3×223196681³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (223196641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111598340 + 111598341.

It is an arithmetic number, because the mean of its divisors is an integer number (111598341).

Almost surely, 2^223196681 is an apocalyptic number.

It is an amenable number.

223196681 is a deficient number, since it is larger than the sum of its proper divisors (1).

223196681 is an equidigital number, since it uses as much as digits as its factorization.

223196681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 223196681 is about 14939.7684386338. The cubic root of 223196681 is about 606.5909278645.

The spelling of 223196681 in words is "two hundred twenty-three million, one hundred ninety-six thousand, six hundred eighty-one".