216231323 has 16 divisors (see below), whose sum is σ = 270885120. Its totient is φ = 167680800.

The previous prime is 216231317. The next prime is 216231359. The reversal of 216231323 is 323132612.

It is not a de Polignac number, because 216231323 - 2⁴ = 216231307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216231373) 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 15 ways as a sum of consecutive naturals, for example, 9593 + ... + 22901.

It is an arithmetic number, because the mean of its divisors is an integer number (16930320).

Almost surely, 2^216231323 is an apocalyptic number.

216231323 is a deficient number, since it is larger than the sum of its proper divisors (54653797).

216231323 is a wasteful number, since it uses less digits than its factorization.

216231323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13538.

The product of its digits is 1296, while the sum is 23.

The square root of 216231323 is about 14704.8061190891. The cubic root of 216231323 is about 600.2141115476.

Adding to 216231323 its reverse (323132612), we get a palindrome (539363935).

The spelling of 216231323 in words is "two hundred sixteen million, two hundred thirty-one thousand, three hundred twenty-three".