823219 has 2 divisors, whose sum is σ = 823220. Its totient is φ = 823218.

The previous prime is 823201. The next prime is 823231. The reversal of 823219 is 912328.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 823219 - 2¹⁵ = 790451 is a prime.

It is a super-2 number, since 2×823219² = 1355379043922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 823193 and 823202.

It is not a weakly prime, because it can be changed into another prime (823519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411609 + 411610.

It is an arithmetic number, because the mean of its divisors is an integer number (411610).

2⁸²³²¹⁹ is an apocalyptic number.

823219 is a deficient number, since it is larger than the sum of its proper divisors (1).

823219 is an equidigital number, since it uses as much as digits as its factorization.

823219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 823219 is about 907.3141683011. The cubic root of 823219 is about 93.7213340505.

The spelling of 823219 in words is "eight hundred twenty-three thousand, two hundred nineteen".