223030145 has 12 divisors (see below), whose sum is σ = 289808316. Its totient is φ = 164698560.

The previous prime is 223030133. The next prime is 223030147. The reversal of 223030145 is 541030322.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 68674369 + 154355776 = 8287^2 + 12424^2 .

It is not a de Polignac number, because 223030145 - 2⁶ = 223030081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223030147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131126 + ... + 132815.

It is an arithmetic number, because the mean of its divisors is an integer number (24150693).

Almost surely, 2^223030145 is an apocalyptic number.

It is an amenable number.

223030145 is a deficient number, since it is larger than the sum of its proper divisors (66778171).

223030145 is a wasteful number, since it uses less digits than its factorization.

223030145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263972 (or 263959 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 223030145 is about 14934.1938182146. The cubic root of 223030145 is about 606.4400230489.

Adding to 223030145 its reverse (541030322), we get a palindrome (764060467).

The spelling of 223030145 in words is "two hundred twenty-three million, thirty thousand, one hundred forty-five".