223128473 has 2 divisors, whose sum is σ = 223128474. Its totient is φ = 223128472.

The previous prime is 223128461. The next prime is 223128509. The reversal of 223128473 is 374821322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167133184 + 55995289 = 12928^2 + 7483^2 .

It is a cyclic number.

It is not a de Polignac number, because 223128473 - 2¹⁰ = 223127449 is a prime.

It is a super-3 number, since 3×223128473³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (223128403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111564236 + 111564237.

It is an arithmetic number, because the mean of its divisors is an integer number (111564237).

Almost surely, 2^223128473 is an apocalyptic number.

It is an amenable number.

223128473 is a deficient number, since it is larger than the sum of its proper divisors (1).

223128473 is an equidigital number, since it uses as much as digits as its factorization.

223128473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 32.

The square root of 223128473 is about 14937.4854979009. The cubic root of 223128473 is about 606.5291309938.

Adding to 223128473 its reverse (374821322), we get a palindrome (597949795).

The spelling of 223128473 in words is "two hundred twenty-three million, one hundred twenty-eight thousand, four hundred seventy-three".