213323662134 has 192 divisors, whose sum is σ = 531334702080. Its totient is φ = 61270940160.

The previous prime is 213323662133. The next prime is 213323662141. The reversal of 213323662134 is 431266323312.

213323662134 is a `hidden beast` number, since 2 + 1 + 3 + 3 + 23 + 6 + 621 + 3 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213323662133) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 80225697 + ... + 80228355.

It is an arithmetic number, because the mean of its divisors is an integer number (2767368240).

Almost surely, 2^213323662134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213323662134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265667351040).

213323662134 is an abundant number, since it is smaller than the sum of its proper divisors (318011039946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213323662134 is a wasteful number, since it uses less digits than its factorization.

213323662134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2995 (or 2992 counting only the distinct ones).

The product of its digits is 93312, while the sum is 36.

Adding to 213323662134 its reverse (431266323312), we get a palindrome (644589985446).

The spelling of 213323662134 in words is "two hundred thirteen billion, three hundred twenty-three million, six hundred sixty-two thousand, one hundred thirty-four".