131968226 has 16 divisors (see below), whose sum is σ = 214074168. Its totient is φ = 60652800.

The previous prime is 131968219. The next prime is 131968231. The reversal of 131968226 is 622869131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 130530625 + 1437601 = 11425^2 + 1199^2 .

It is a super-2 number, since 2×131968226² = 34831225347174152, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131968226.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4265 + ... + 16796.

Almost surely, 2^131968226 is an apocalyptic number.

131968226 is a deficient number, since it is larger than the sum of its proper divisors (82105942).

131968226 is a wasteful number, since it uses less digits than its factorization.

131968226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21317.

The product of its digits is 31104, while the sum is 38.

The square root of 131968226 is about 11487.7424239926. The cubic root of 131968226 is about 509.1234796783.

The spelling of 131968226 in words is "one hundred thirty-one million, nine hundred sixty-eight thousand, two hundred twenty-six".