181423212 has 12 divisors (see below), whose sum is σ = 423320856. Its totient is φ = 60474400.

The previous prime is 181423199. The next prime is 181423213. The reversal of 181423212 is 212324181.

181423212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (181423213) 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, 7559289 + ... + 7559312.

It is an arithmetic number, because the mean of its divisors is an integer number (35276738).

Almost surely, 2^181423212 is an apocalyptic number.

181423212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

181423212 is an abundant number, since it is smaller than the sum of its proper divisors (241897644).

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

181423212 is a wasteful number, since it uses less digits than its factorization.

181423212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15118608 (or 15118606 counting only the distinct ones).

The product of its digits is 768, while the sum is 24.

The square root of 181423212 is about 13469.3434138417. The cubic root of 181423212 is about 566.1058166394.

Adding to 181423212 its reverse (212324181), we get a palindrome (393747393).

The spelling of 181423212 in words is "one hundred eighty-one million, four hundred twenty-three thousand, two hundred twelve".