223231109 has 4 divisors (see below), whose sum is σ = 225441420. Its totient is φ = 221020800.

The previous prime is 223231087. The next prime is 223231111. The reversal of 223231109 is 901132322.

223231109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 175483009 + 47748100 = 13247^2 + 6910^2 .

It is a cyclic number.

It is not a de Polignac number, because 223231109 - 2²⁰ = 222182533 is a prime.

It is a super-3 number, since 3×223231109³ (a number of 26 digits) contains 333 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 (223231409) 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, 1105004 + ... + 1105205.

It is an arithmetic number, because the mean of its divisors is an integer number (56360355).

Almost surely, 2^223231109 is an apocalyptic number.

It is an amenable number.

223231109 is a deficient number, since it is larger than the sum of its proper divisors (2210311).

223231109 is a wasteful number, since it uses less digits than its factorization.

223231109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2210310.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 223231109 is about 14940.9206208988. The cubic root of 223231109 is about 606.6221150648.

It can be divided in two parts, 22323 and 1109, that added together give a palindrome (23432).

The spelling of 223231109 in words is "two hundred twenty-three million, two hundred thirty-one thousand, one hundred nine".