131219087 has 4 divisors (see below), whose sum is σ = 131278896. Its totient is φ = 131159280.

The previous prime is 131219083. The next prime is 131219089. The reversal of 131219087 is 780912131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 780912131 = 18229 ⋅42839.

It is a cyclic number.

It is not a de Polignac number, because 131219087 - 2² = 131219083 is a prime.

It is a super-2 number, since 2×131219087² = 34436897586227138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131219083) 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 in 3 ways as a sum of consecutive naturals, for example, 26483 + ... + 31044.

It is an arithmetic number, because the mean of its divisors is an integer number (32819724).

Almost surely, 2^131219087 is an apocalyptic number.

131219087 is a deficient number, since it is larger than the sum of its proper divisors (59809).

131219087 is an equidigital number, since it uses as much as digits as its factorization.

131219087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59808.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 131219087 is about 11455.0900040113. The cubic root of 131219087 is about 508.1582770390.

The spelling of 131219087 in words is "one hundred thirty-one million, two hundred nineteen thousand, eighty-seven".