219231330091 has 8 divisors (see below), whose sum is σ = 223096085024. Its totient is φ = 215375310720.

The previous prime is 219231330077. The next prime is 219231330151. The reversal of 219231330091 is 190033132912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 219231330091 - 2²⁷ = 219097112363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219231330041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2133246 + ... + 2233651.

It is an arithmetic number, because the mean of its divisors is an integer number (27887010628).

Almost surely, 2^219231330091 is an apocalyptic number.

219231330091 is a deficient number, since it is larger than the sum of its proper divisors (3864754933).

219231330091 is an equidigital number, since it uses as much as digits as its factorization.

219231330091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4367781.

The product of its (nonzero) digits is 8748, while the sum is 34.

The spelling of 219231330091 in words is "two hundred nineteen billion, two hundred thirty-one million, three hundred thirty thousand, ninety-one".