181224230 has 32 divisors (see below), whose sum is σ = 358279200. Its totient is φ = 65451520.

The previous prime is 181224217. The next prime is 181224257. The reversal of 181224230 is 32422181.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 181224196 and 181224205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10862 + ... + 21918.

It is an arithmetic number, because the mean of its divisors is an integer number (11196225).

Almost surely, 2^181224230 is an apocalyptic number.

181224230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

181224230 is a deficient number, since it is larger than the sum of its proper divisors (177054970).

181224230 is a wasteful number, since it uses less digits than its factorization.

181224230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11224.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 181224230 is about 13461.9549100419. The cubic root of 181224230 is about 565.8987757398.

The spelling of 181224230 in words is "one hundred eighty-one million, two hundred twenty-four thousand, two hundred thirty".