223431233 has 2 divisors, whose sum is σ = 223431234. Its totient is φ = 223431232.

The previous prime is 223431191. The next prime is 223431239. The reversal of 223431233 is 332134322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218359729 + 5071504 = 14777^2 + 2252^2 .

It is a cyclic number.

It is not a de Polignac number, because 223431233 - 2¹⁰ = 223430209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 223431199 and 223431208.

It is not a weakly prime, because it can be changed into another prime (223431239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111715616 + 111715617.

It is an arithmetic number, because the mean of its divisors is an integer number (111715617).

Almost surely, 2^223431233 is an apocalyptic number.

It is an amenable number.

223431233 is a deficient number, since it is larger than the sum of its proper divisors (1).

223431233 is an equidigital number, since it uses as much as digits as its factorization.

223431233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 23.

The square root of 223431233 is about 14947.6162982597. The cubic root of 223431233 is about 606.8033373939.

Adding to 223431233 its reverse (332134322), we get a palindrome (555565555).

It can be divided in two parts, 2234312 and 33, that multiplied together give a triangular number (73732296 = T₁₂₁₄₃).

The spelling of 223431233 in words is "two hundred twenty-three million, four hundred thirty-one thousand, two hundred thirty-three".