213123143312311 has 8 divisors (see below), whose sum is σ = 213466527115904. Its totient is φ = 212779777323960.

The previous prime is 213123143312273. The next prime is 213123143312327. The reversal of 213123143312311 is 113213341321312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213123143312311 - 2¹⁷ = 213123143181239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213123143312341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19595920 + ... + 28464826.

It is an arithmetic number, because the mean of its divisors is an integer number (26683315889488).

Almost surely, 2^{213123143312311} is an apocalyptic number.

213123143312311 is a deficient number, since it is larger than the sum of its proper divisors (343383803593).

213123143312311 is an equidigital number, since it uses as much as digits as its factorization.

213123143312311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8907621.

The product of its digits is 7776, while the sum is 31.

Adding to 213123143312311 its reverse (113213341321312), we get a palindrome (326336484633623).

The spelling of 213123143312311 in words is "two hundred thirteen trillion, one hundred twenty-three billion, one hundred forty-three million, three hundred twelve thousand, three hundred eleven".