423312217 has 8 divisors (see below), whose sum is σ = 456949440. Its totient is φ = 390944400.

The previous prime is 423312193. The next prime is 423312247. The reversal of 423312217 is 712213324.

It is a happy number.

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 423312217 - 2⁷ = 423312089 is a prime.

It is a super-2 number, since 2×423312217² = 358386466122910178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423312191 and 423312200.

It is not an unprimeable number, because it can be changed into a prime (423312247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316659 + ... + 317992.

It is an arithmetic number, because the mean of its divisors is an integer number (57118680).

Almost surely, 2^423312217 is an apocalyptic number.

It is an amenable number.

423312217 is a deficient number, since it is larger than the sum of its proper divisors (33637223).

423312217 is a wasteful number, since it uses less digits than its factorization.

423312217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634703.

The product of its digits is 2016, while the sum is 25.

The square root of 423312217 is about 20574.5526561333. The cubic root of 423312217 is about 750.8507188200.

The spelling of 423312217 in words is "four hundred twenty-three million, three hundred twelve thousand, two hundred seventeen".