131530219 has 2 divisors, whose sum is σ = 131530220. Its totient is φ = 131530218.

The previous prime is 131530187. The next prime is 131530229. The reversal of 131530219 is 912035131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131530219 - 2⁵ = 131530187 is a prime.

It is a super-2 number, since 2×131530219² = 34600397020375922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131530193 and 131530202.

It is not a weakly prime, because it can be changed into another prime (131530229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65765109 + 65765110.

It is an arithmetic number, because the mean of its divisors is an integer number (65765110).

Almost surely, 2^131530219 is an apocalyptic number.

131530219 is a deficient number, since it is larger than the sum of its proper divisors (1).

131530219 is an equidigital number, since it uses as much as digits as its factorization.

131530219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 131530219 is about 11468.6624765053. The cubic root of 131530219 is about 508.5595893513.

The spelling of 131530219 in words is "one hundred thirty-one million, five hundred thirty thousand, two hundred nineteen".