23331211312213 has 6 divisors (see below), whose sum is σ = 27140388669366. Its totient is φ = 19998181124712.

The previous prime is 23331211312177. The next prime is 23331211312333. The reversal of 23331211312213 is 31221311213332.

It can be written as a sum of positive squares in only one way, i.e., 13843474545124 + 9487736767089 = 3720682^2 + 3080217^2 .

It is a de Polignac number, because none of the positive numbers 2^k-23331211312213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23331211312613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 238073584770 + ... + 238073584867.

It is an arithmetic number, because the mean of its divisors is an integer number (4523398111561).

Almost surely, 2^{23331211312213} is an apocalyptic number.

It is an amenable number.

23331211312213 is a deficient number, since it is larger than the sum of its proper divisors (3809177357153).

23331211312213 is an equidigital number, since it uses as much as digits as its factorization.

23331211312213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476147169651 (or 476147169644 counting only the distinct ones).

The product of its digits is 3888, while the sum is 28.

Adding to 23331211312213 its reverse (31221311213332), we get a palindrome (54552522525545).

The spelling of 23331211312213 in words is "twenty-three trillion, three hundred thirty-one billion, two hundred eleven million, three hundred twelve thousand, two hundred thirteen".