213312323 has 4 divisors (see below), whose sum is σ = 243785520. Its totient is φ = 182839128.

The previous prime is 213312283. The next prime is 213312361. The reversal of 213312323 is 323213312.

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 213312323 - 2¹⁴ = 213295939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213312295 and 213312304.

It is not an unprimeable number, because it can be changed into a prime (213312383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15236588 + ... + 15236601.

It is an arithmetic number, because the mean of its divisors is an integer number (60946380).

Almost surely, 2^213312323 is an apocalyptic number.

213312323 is a deficient number, since it is larger than the sum of its proper divisors (30473197).

213312323 is an equidigital number, since it uses as much as digits as its factorization.

213312323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30473196.

The product of its digits is 648, while the sum is 20.

The square root of 213312323 is about 14605.2156095006. The cubic root of 213312323 is about 597.5010164371.

Adding to 213312323 its reverse (323213312), we get a palindrome (536525635).

The spelling of 213312323 in words is "two hundred thirteen million, three hundred twelve thousand, three hundred twenty-three".