131322206 has 4 divisors (see below), whose sum is σ = 196983312. Its totient is φ = 65661102.

The previous prime is 131322199. The next prime is 131322223. The reversal of 131322206 is 602223131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 32830550 + ... + 32830553.

It is an arithmetic number, because the mean of its divisors is an integer number (49245828).

Almost surely, 2^131322206 is an apocalyptic number.

131322206 is a deficient number, since it is larger than the sum of its proper divisors (65661106).

131322206 is an equidigital number, since it uses as much as digits as its factorization.

131322206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65661105.

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

The square root of 131322206 is about 11459.5901322866. The cubic root of 131322206 is about 508.2913548661.

Adding to 131322206 its reverse (602223131), we get a palindrome (733545337).

The spelling of 131322206 in words is "one hundred thirty-one million, three hundred twenty-two thousand, two hundred six".