8312219 has 2 divisors, whose sum is σ = 8312220. Its totient is φ = 8312218.

The previous prime is 8312209. The next prime is 8312233. The reversal of 8312219 is 9122138.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8312219 is a prime.

It is a super-2 number, since 2×8312219² = 138185969407922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8312209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4156109 + 4156110.

It is an arithmetic number, because the mean of its divisors is an integer number (4156110).

Almost surely, 2^8312219 is an apocalyptic number.

8312219 is a deficient number, since it is larger than the sum of its proper divisors (1).

8312219 is an equidigital number, since it uses as much as digits as its factorization.

8312219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 26.

The square root of 8312219 is about 2883.0919166756. The cubic root of 8312219 is about 202.5686928461.

The spelling of 8312219 in words is "eight million, three hundred twelve thousand, two hundred nineteen".