181431196 has 12 divisors (see below), whose sum is σ = 317620800. Its totient is φ = 90682400.

The previous prime is 181431193. The next prime is 181431197. The reversal of 181431196 is 691134181.

181431196 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181431193) 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, 7221 + ... + 20371.

It is an arithmetic number, because the mean of its divisors is an integer number (26468400).

Almost surely, 2^181431196 is an apocalyptic number.

It is an amenable number.

181431196 is a deficient number, since it is larger than the sum of its proper divisors (136189604).

181431196 is a wasteful number, since it uses less digits than its factorization.

181431196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16604 (or 16602 counting only the distinct ones).

The product of its digits is 5184, while the sum is 34.

The square root of 181431196 is about 13469.6397873143. The cubic root of 181431196 is about 566.1141208369.

The spelling of 181431196 in words is "one hundred eighty-one million, four hundred thirty-one thousand, one hundred ninety-six".