213123213120323 has 16 divisors (see below), whose sum is σ = 238392734497920. Its totient is φ = 190464504721480.

The previous prime is 213123213120263. The next prime is 213123213120347. The reversal of 213123213120323 is 323021312321312.

213123213120323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-213123213120323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213123212120323) 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, 1356892865 + ... + 1357049922.

It is an arithmetic number, because the mean of its divisors is an integer number (14899545906120).

Almost surely, 2^{213123213120323} is an apocalyptic number.

213123213120323 is a deficient number, since it is larger than the sum of its proper divisors (25269521377597).

213123213120323 is an equidigital number, since it uses as much as digits as its factorization.

213123213120323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2713942879 (or 2713942857 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 213123213120323 its reverse (323021312321312), we get a palindrome (536144525441635).

The spelling of 213123213120323 in words is "two hundred thirteen trillion, one hundred twenty-three billion, two hundred thirteen million, one hundred twenty thousand, three hundred twenty-three".