223210145 has 8 divisors (see below), whose sum is σ = 268543080. Its totient is φ = 178107520.

The previous prime is 223210133. The next prime is 223210171. The reversal of 223210145 is 541012322.

It can be written as a sum of positive squares in 4 ways, for example, as 8059921 + 215150224 = 2839^2 + 14668^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 223210145 - 2¹⁰ = 223209121 is a prime.

It is a super-3 number, since 3×223210145³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55436 + ... + 59325.

It is an arithmetic number, because the mean of its divisors is an integer number (33567885).

Almost surely, 2^223210145 is an apocalyptic number.

It is an amenable number.

223210145 is a deficient number, since it is larger than the sum of its proper divisors (45332935).

223210145 is a wasteful number, since it uses less digits than its factorization.

223210145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115155.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 223210145 is about 14940.2190412323. The cubic root of 223210145 is about 606.6031248441.

Adding to 223210145 its reverse (541012322), we get a palindrome (764222467).

The spelling of 223210145 in words is "two hundred twenty-three million, two hundred ten thousand, one hundred forty-five".