131601226 has 32 divisors (see below), whose sum is σ = 208692288. Its totient is φ = 62175360.

The previous prime is 131601221. The next prime is 131601227. The reversal of 131601226 is 622106131.

It is a junction number, because it is equal to n+sod(n) for n = 131601197 and 131601206.

It is not an unprimeable number, because it can be changed into a prime (131601221) 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 15 ways as a sum of consecutive naturals, for example, 464881 + ... + 465163.

It is an arithmetic number, because the mean of its divisors is an integer number (6521634).

Almost surely, 2^131601226 is an apocalyptic number.

131601226 is a deficient number, since it is larger than the sum of its proper divisors (77091062).

131601226 is a wasteful number, since it uses less digits than its factorization.

131601226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 131601226 is about 11471.7577554619. The cubic root of 131601226 is about 508.6510887160.

Adding to 131601226 its reverse (622106131), we get a palindrome (753707357).

The spelling of 131601226 in words is "one hundred thirty-one million, six hundred one thousand, two hundred twenty-six".