223444231 has 4 divisors (see below), whose sum is σ = 224420200. Its totient is φ = 222468264.

The previous prime is 223444229. The next prime is 223444259. The reversal of 223444231 is 132444322.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 223444231 - 2¹ = 223444229 is a prime.

It is a super-2 number, since 2×223444231² = 99854648734362722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223444196 and 223444205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223444261) 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, 487641 + ... + 488098.

It is an arithmetic number, because the mean of its divisors is an integer number (56105050).

Almost surely, 2^223444231 is an apocalyptic number.

223444231 is a deficient number, since it is larger than the sum of its proper divisors (975969).

223444231 is an equidigital number, since it uses as much as digits as its factorization.

223444231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975968.

The product of its digits is 4608, while the sum is 25.

The square root of 223444231 is about 14948.0510769799. The cubic root of 223444231 is about 606.8151039924.

Adding to 223444231 its reverse (132444322), we get a palindrome (355888553).

Subtracting from 223444231 its reverse (132444322), we obtain a palindrome (90999909).

The spelling of 223444231 in words is "two hundred twenty-three million, four hundred forty-four thousand, two hundred thirty-one".