223020109 has 4 divisors (see below), whose sum is σ = 240175516. Its totient is φ = 205864704.

The previous prime is 223020097. The next prime is 223020143. The reversal of 223020109 is 901020322.

It is a happy number.

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 26936100 + 196084009 = 5190^2 + 14003^2 .

It is a cyclic number.

It is not a de Polignac number, because 223020109 - 2⁹ = 223019597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223020199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8577684 + ... + 8577709.

It is an arithmetic number, because the mean of its divisors is an integer number (60043879).

Almost surely, 2^223020109 is an apocalyptic number.

It is an amenable number.

223020109 is a deficient number, since it is larger than the sum of its proper divisors (17155407).

223020109 is a wasteful number, since it uses less digits than its factorization.

223020109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17155406.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 223020109 is about 14933.8578070102. The cubic root of 223020109 is about 606.4309266352.

The spelling of 223020109 in words is "two hundred twenty-three million, twenty thousand, one hundred nine".