181336230 has 48 divisors (see below), whose sum is σ = 472215744. Its totient is φ = 48280320.

The previous prime is 181336219. The next prime is 181336249. The reversal of 181336230 is 32633181.

It is a happy number.

181336230 is a `hidden beast` number, since 1 + 8 + 1 + 33 + 623 + 0 = 666.

It is a super-2 number, since 2×181336230² = 65765656621225800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 181336194 and 181336203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78147 + ... + 80433.

It is an arithmetic number, because the mean of its divisors is an integer number (9837828).

Almost surely, 2^181336230 is an apocalyptic number.

181336230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

181336230 is an abundant number, since it is smaller than the sum of its proper divisors (290879514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181336230 is a wasteful number, since it uses less digits than its factorization.

181336230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3181 (or 3178 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 181336230 is about 13466.1141388301. The cubic root of 181336230 is about 566.0153304458.

The spelling of 181336230 in words is "one hundred eighty-one million, three hundred thirty-six thousand, two hundred thirty".