213123321322323 has 16 divisors (see below), whose sum is σ = 285737462433696. Its totient is φ = 141295714053120.

The previous prime is 213123321322283. The next prime is 213123321322361. The reversal of 213123321322323 is 323223123321312.

It is not a de Polignac number, because 213123321322323 - 2⁹ = 213123321321811 is a prime.

It is a super-3 number, since 3×213123321322323³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (213123321312323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49741161 + ... + 53855637.

It is an arithmetic number, because the mean of its divisors is an integer number (17858591402106).

Almost surely, 2^{213123321322323} is an apocalyptic number.

213123321322323 is a deficient number, since it is larger than the sum of its proper divisors (72614141111373).

213123321322323 is a wasteful number, since it uses less digits than its factorization.

213123321322323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210054.

The product of its digits is 46656, while the sum is 33.

Adding to 213123321322323 its reverse (323223123321312), we get a palindrome (536346444643635).

The spelling of 213123321322323 in words is "two hundred thirteen trillion, one hundred twenty-three billion, three hundred twenty-one million, three hundred twenty-two thousand, three hundred twenty-three".