131663219 has 4 divisors (see below), whose sum is σ = 136203360. Its totient is φ = 127123080.

The previous prime is 131663167. The next prime is 131663221. The reversal of 131663219 is 912366131.

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

It is a cyclic number.

It is not a de Polignac number, because 131663219 - 2¹² = 131659123 is a prime.

It is a super-2 number, since 2×131663219² = 34670406474883922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131663239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2270027 + ... + 2270084.

It is an arithmetic number, because the mean of its divisors is an integer number (34050840).

Almost surely, 2^131663219 is an apocalyptic number.

131663219 is a deficient number, since it is larger than the sum of its proper divisors (4540141).

131663219 is an equidigital number, since it uses as much as digits as its factorization.

131663219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4540140.

The product of its digits is 5832, while the sum is 32.

The square root of 131663219 is about 11474.4594208180. The cubic root of 131663219 is about 508.7309457656.

The spelling of 131663219 in words is "one hundred thirty-one million, six hundred sixty-three thousand, two hundred nineteen".