181072223 has 8 divisors (see below), whose sum is σ = 193288320. Its totient is φ = 169124760.

The previous prime is 181072211. The next prime is 181072267. The reversal of 181072223 is 322270181.

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 181072223 - 2⁴ = 181072207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 181072192 and 181072201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181072273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65765 + ... + 68462.

It is an arithmetic number, because the mean of its divisors is an integer number (24161040).

Almost surely, 2^181072223 is an apocalyptic number.

181072223 is a deficient number, since it is larger than the sum of its proper divisors (12216097).

181072223 is a wasteful number, since it uses less digits than its factorization.

181072223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134317.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 181072223 is about 13456.3079260249. The cubic root of 181072223 is about 565.7405102269.

The spelling of 181072223 in words is "one hundred eighty-one million, seventy-two thousand, two hundred twenty-three".