213111210323 has 4 divisors (see below), whose sum is σ = 232484956728. Its totient is φ = 193737463920.

The previous prime is 213111210313. The next prime is 213111210343. The reversal of 213111210323 is 323012111312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 213111210323 - 2⁶ = 213111210259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213111210295 and 213111210304.

It is not an unprimeable number, because it can be changed into a prime (213111210313) 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, 9686873186 + ... + 9686873207.

It is an arithmetic number, because the mean of its divisors is an integer number (58121239182).

Almost surely, 2^213111210323 is an apocalyptic number.

213111210323 is a deficient number, since it is larger than the sum of its proper divisors (19373746405).

213111210323 is a wasteful number, since it uses less digits than its factorization.

213111210323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19373746404.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 213111210323 its reverse (323012111312), we get a palindrome (536123321635).

The spelling of 213111210323 in words is "two hundred thirteen billion, one hundred eleven million, two hundred ten thousand, three hundred twenty-three".