131236226 has 16 divisors (see below), whose sum is σ = 227383200. Its totient is φ = 56143680.

The previous prime is 131236219. The next prime is 131236271. The reversal of 131236226 is 622632131.

131236226 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131236195 and 131236204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175076 + ... + 175823.

It is an arithmetic number, because the mean of its divisors is an integer number (14211450).

Almost surely, 2^131236226 is an apocalyptic number.

131236226 is a deficient number, since it is larger than the sum of its proper divisors (96146974).

131236226 is a wasteful number, since it uses less digits than its factorization.

131236226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350929.

The product of its digits is 2592, while the sum is 26.

The square root of 131236226 is about 11455.8380749730. The cubic root of 131236226 is about 508.1804002066.

Adding to 131236226 its reverse (622632131), we get a palindrome (753868357).

The spelling of 131236226 in words is "one hundred thirty-one million, two hundred thirty-six thousand, two hundred twenty-six".