213120312323 has 16 divisors (see below), whose sum is σ = 222121116000. Its totient is φ = 204230514432.

The previous prime is 213120312299. The next prime is 213120312329. The reversal of 213120312323 is 323213021312.

It is a cyclic number.

It is not a de Polignac number, because 213120312323 - 2¹⁸ = 213120050179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213120312329) 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, 19895693 + ... + 19906401.

It is an arithmetic number, because the mean of its divisors is an integer number (13882569750).

Almost surely, 2^213120312323 is an apocalyptic number.

213120312323 is a deficient number, since it is larger than the sum of its proper divisors (9000803677).

213120312323 is a wasteful number, since it uses less digits than its factorization.

213120312323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15814.

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

Adding to 213120312323 its reverse (323213021312), we get a palindrome (536333333635).

The spelling of 213120312323 in words is "two hundred thirteen billion, one hundred twenty million, three hundred twelve thousand, three hundred twenty-three".