223430309 has 4 divisors (see below), whose sum is σ = 229469004. Its totient is φ = 217391616.

The previous prime is 223430293. The next prime is 223430323. The reversal of 223430309 is 903034322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 197318209 + 26112100 = 14047^2 + 5110^2 .

It is a cyclic number.

It is not a de Polignac number, because 223430309 - 2⁴ = 223430293 is a prime.

It is a super-2 number, since 2×223430309² = 99842205959670962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223430359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3019292 + ... + 3019365.

It is an arithmetic number, because the mean of its divisors is an integer number (57367251).

Almost surely, 2^223430309 is an apocalyptic number.

It is an amenable number.

223430309 is a deficient number, since it is larger than the sum of its proper divisors (6038695).

223430309 is an equidigital number, since it uses as much as digits as its factorization.

223430309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6038694.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 223430309 is about 14947.5853902896. The cubic root of 223430309 is about 606.8025009142.

The spelling of 223430309 in words is "two hundred twenty-three million, four hundred thirty thousand, three hundred nine".