131320226 has 8 divisors (see below), whose sum is σ = 197207580. Its totient is φ = 65584368.

The previous prime is 131320219. The next prime is 131320261. The reversal of 131320226 is 622023131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 130759225 + 561001 = 11435^2 + 749^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 131320198 and 131320207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35681 + ... + 39188.

Almost surely, 2^131320226 is an apocalyptic number.

131320226 is a deficient number, since it is larger than the sum of its proper divisors (65887354).

131320226 is an equidigital number, since it uses as much as digits as its factorization.

131320226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75748.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 131320226 is about 11459.5037414366. The cubic root of 131320226 is about 508.2888002792.

Adding to 131320226 its reverse (622023131), we get a palindrome (753343357).

The spelling of 131320226 in words is "one hundred thirty-one million, three hundred twenty thousand, two hundred twenty-six".