223161 has 8 divisors (see below), whose sum is σ = 301920. Its totient is φ = 146592.

The previous prime is 223151. The next prime is 223207. The reversal of 223161 is 161322.

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

It is not a de Polignac number, because 223161 - 2⁵ = 223129 is a prime.

It is a super-3 number, since 3×223161³ = 33340810356966843, which contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 223161.

It is not an unprimeable number, because it can be changed into a prime (223151) 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, 291 + ... + 728.

It is an arithmetic number, because the mean of its divisors is an integer number (37740).

2²²³¹⁶¹ is an apocalyptic number.

It is an amenable number.

223161 is a deficient number, since it is larger than the sum of its proper divisors (78759).

223161 is a wasteful number, since it uses less digits than its factorization.

223161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095.

The product of its digits is 72, while the sum is 15.

The square root of 223161 is about 472.3991955963. The cubic root of 223161 is about 60.6558602228.

Adding to 223161 its reverse (161322), we get a palindrome (384483).

The spelling of 223161 in words is "two hundred twenty-three thousand, one hundred sixty-one".