199131226 has 32 divisors (see below), whose sum is σ = 354493440. Its totient is φ = 82083456.

The previous prime is 199131221. The next prime is 199131227. The reversal of 199131226 is 622131991.

199131226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 199131191 and 199131200.

It is not an unprimeable number, because it can be changed into a prime (199131221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126295 + ... + 127861.

It is an arithmetic number, because the mean of its divisors is an integer number (11077920).

Almost surely, 2^199131226 is an apocalyptic number.

199131226 is a deficient number, since it is larger than the sum of its proper divisors (155362214).

199131226 is a wasteful number, since it uses less digits than its factorization.

199131226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918.

The product of its digits is 5832, while the sum is 34.

The square root of 199131226 is about 14111.3863953901. The cubic root of 199131226 is about 583.9555483931.

The spelling of 199131226 in words is "one hundred ninety-nine million, one hundred thirty-one thousand, two hundred twenty-six".