223443161 has 4 divisors (see below), whose sum is σ = 224781312. Its totient is φ = 222105012.

The previous prime is 223443151. The next prime is 223443193. The reversal of 223443161 is 161344322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223443161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223443161.

It is not an unprimeable number, because it can be changed into a prime (223443131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668825 + ... + 669158.

It is an arithmetic number, because the mean of its divisors is an integer number (56195328).

Almost surely, 2^223443161 is an apocalyptic number.

It is an amenable number.

223443161 is a deficient number, since it is larger than the sum of its proper divisors (1338151).

223443161 is a wasteful number, since it uses less digits than its factorization.

223443161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338150.

The product of its digits is 3456, while the sum is 26.

The square root of 223443161 is about 14948.0152863181. The cubic root of 223443161 is about 606.8141353790.

Adding to 223443161 its reverse (161344322), we get a palindrome (384787483).

The spelling of 223443161 in words is "two hundred twenty-three million, four hundred forty-three thousand, one hundred sixty-one".