423312215 has 4 divisors (see below), whose sum is σ = 507974664. Its totient is φ = 338649768.

The previous prime is 423312193. The next prime is 423312247. The reversal of 423312215 is 512213324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 423312215 - 2²² = 419117911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42331217 + ... + 42331226.

It is an arithmetic number, because the mean of its divisors is an integer number (126993666).

Almost surely, 2^423312215 is an apocalyptic number.

423312215 is a deficient number, since it is larger than the sum of its proper divisors (84662449).

423312215 is an equidigital number, since it uses as much as digits as its factorization.

423312215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84662448.

The product of its digits is 1440, while the sum is 23.

The square root of 423312215 is about 20574.5526075295. The cubic root of 423312215 is about 750.8507176374.

Adding to 423312215 its reverse (512213324), we get a palindrome (935525539).

The spelling of 423312215 in words is "four hundred twenty-three million, three hundred twelve thousand, two hundred fifteen".