131678219 has 2 divisors, whose sum is σ = 131678220. Its totient is φ = 131678218.

The previous prime is 131678207. The next prime is 131678251. The reversal of 131678219 is 912876131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131678219 - 2⁸ = 131677963 is a prime.

It is a super-2 number, since 2×131678219² = 34678306718023922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131678279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65839109 + 65839110.

It is an arithmetic number, because the mean of its divisors is an integer number (65839110).

Almost surely, 2^131678219 is an apocalyptic number.

131678219 is a deficient number, since it is larger than the sum of its proper divisors (1).

131678219 is an equidigital number, since it uses as much as digits as its factorization.

131678219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 38.

The square root of 131678219 is about 11475.1130277658. The cubic root of 131678219 is about 508.7502644345.

The spelling of 131678219 in words is "one hundred thirty-one million, six hundred seventy-eight thousand, two hundred nineteen".