223144385 has 8 divisors (see below), whose sum is σ = 268394280. Its totient is φ = 178101504.

The previous prime is 223144351. The next prime is 223144387. The reversal of 223144385 is 583441322.

223144385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 19254544 + 203889841 = 4388^2 + 14279^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 223144385 - 2¹² = 223140289 is a prime.

It is a super-3 number, since 3×223144385³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (223144387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49370 + ... + 53699.

It is an arithmetic number, because the mean of its divisors is an integer number (33549285).

Almost surely, 2^223144385 is an apocalyptic number.

It is an amenable number.

223144385 is a deficient number, since it is larger than the sum of its proper divisors (45249895).

223144385 is a wasteful number, since it uses less digits than its factorization.

223144385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103507.

The product of its digits is 23040, while the sum is 32.

The square root of 223144385 is about 14938.0181081695. The cubic root of 223144385 is about 606.5435484906.

The spelling of 223144385 in words is "two hundred twenty-three million, one hundred forty-four thousand, three hundred eighty-five".