223309897 has 2 divisors, whose sum is σ = 223309898. Its totient is φ = 223309896.

The previous prime is 223309843. The next prime is 223309913. The reversal of 223309897 is 798903322.

It is a happy number.

223309897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212314041 + 10995856 = 14571^2 + 3316^2 .

It is a cyclic number.

It is not a de Polignac number, because 223309897 - 2⁷ = 223309769 is a prime.

It is not a weakly prime, because it can be changed into another prime (223309397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111654948 + 111654949.

It is an arithmetic number, because the mean of its divisors is an integer number (111654949).

Almost surely, 2^223309897 is an apocalyptic number.

It is an amenable number.

223309897 is a deficient number, since it is larger than the sum of its proper divisors (1).

223309897 is an equidigital number, since it uses as much as digits as its factorization.

223309897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 223309897 is about 14943.5570397412. The cubic root of 223309897 is about 606.6934744759.

The spelling of 223309897 in words is "two hundred twenty-three million, three hundred nine thousand, eight hundred ninety-seven".