181341212 has 12 divisors (see below), whose sum is σ = 341758536. Its totient is φ = 83695920.

The previous prime is 181341211. The next prime is 181341217. The reversal of 181341212 is 212143181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181341211) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1743614 + ... + 1743717.

It is an arithmetic number, because the mean of its divisors is an integer number (28479878).

Almost surely, 2^181341212 is an apocalyptic number.

It is an amenable number.

181341212 is a deficient number, since it is larger than the sum of its proper divisors (160417324).

181341212 is a wasteful number, since it uses less digits than its factorization.

181341212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3487348 (or 3487346 counting only the distinct ones).

The product of its digits is 384, while the sum is 23.

The square root of 181341212 is about 13466.2991203968. The cubic root of 181341212 is about 566.0205139339.

Adding to 181341212 its reverse (212143181), we get a palindrome (393484393).

The spelling of 181341212 in words is "one hundred eighty-one million, three hundred forty-one thousand, two hundred twelve".