823242217 has 8 divisors (see below), whose sum is σ = 946842176. Its totient is φ = 701140752.

The previous prime is 823242143. The next prime is 823242359. The reversal of 823242217 is 712242328.

823242217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 823242217 - 2²⁷ = 689024489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (823240217) 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, 373443 + ... + 375640.

It is an arithmetic number, because the mean of its divisors is an integer number (118355272).

Almost surely, 2^823242217 is an apocalyptic number.

It is an amenable number.

823242217 is a deficient number, since it is larger than the sum of its proper divisors (123599959).

823242217 is a wasteful number, since it uses less digits than its factorization.

823242217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749247.

The product of its digits is 10752, while the sum is 31.

The square root of 823242217 is about 28692.1978419221. The cubic root of 823242217 is about 937.2221510718. Note that the first 3 decimals are identical.

The spelling of 823242217 in words is "eight hundred twenty-three million, two hundred forty-two thousand, two hundred seventeen".