216256323 has 8 divisors (see below), whose sum is σ = 288659200. Its totient is φ = 144012168.

The previous prime is 216256321. The next prime is 216256367. The reversal of 216256323 is 323652612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216256323 - 2¹ = 216256321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216256321) 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, 36463 + ... + 41976.

It is an arithmetic number, because the mean of its divisors is an integer number (36082400).

Almost surely, 2^216256323 is an apocalyptic number.

216256323 is a deficient number, since it is larger than the sum of its proper divisors (72402877).

216256323 is an equidigital number, since it uses as much as digits as its factorization.

216256323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79361.

The product of its digits is 12960, while the sum is 30.

The square root of 216256323 is about 14705.6561567310. The cubic root of 216256323 is about 600.2372422922.

It can be divided in two parts, 2162 and 56323, that added together give a palindrome (58485).

The spelling of 216256323 in words is "two hundred sixteen million, two hundred fifty-six thousand, three hundred twenty-three".