131320219 has 2 divisors, whose sum is σ = 131320220. Its totient is φ = 131320218.

The previous prime is 131320187. The next prime is 131320261. The reversal of 131320219 is 912023131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131320219 - 2⁵ = 131320187 is a prime.

It is a super-2 number, since 2×131320219² = 34489999836415922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131320219.

It is not a weakly prime, because it can be changed into another prime (131320919) by changing a digit.

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, 65660109 + 65660110.

It is an arithmetic number, because the mean of its divisors is an integer number (65660110).

Almost surely, 2^131320219 is an apocalyptic number.

131320219 is a deficient number, since it is larger than the sum of its proper divisors (1).

131320219 is an equidigital number, since it uses as much as digits as its factorization.

131320219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 131320219 is about 11459.5034360133. The cubic root of 131320219 is about 508.2887912478.

The spelling of 131320219 in words is "one hundred thirty-one million, three hundred twenty thousand, two hundred nineteen".