12819171 has 4 divisors (see below), whose sum is σ = 17092232. Its totient is φ = 8546112.

The previous prime is 12819137. The next prime is 12819179. The reversal of 12819171 is 17191821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17191821 = 3 ⋅5730607.

It is not a de Polignac number, because 12819171 - 2¹⁷ = 12688099 is a prime.

It is a super-2 number, since 2×12819171² = 328662290254482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12819179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2136526 + ... + 2136531.

It is an arithmetic number, because the mean of its divisors is an integer number (4273058).

Almost surely, 2^12819171 is an apocalyptic number.

12819171 is a deficient number, since it is larger than the sum of its proper divisors (4273061).

12819171 is an equidigital number, since it uses as much as digits as its factorization.

12819171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4273060.

The product of its digits is 1008, while the sum is 30.

The square root of 12819171 is about 3580.3869902568. The cubic root of 12819171 is about 234.0381448518.

The spelling of 12819171 in words is "twelve million, eight hundred nineteen thousand, one hundred seventy-one".