213213431334 has 16 divisors (see below), whose sum is σ = 430339037040. Its totient is φ = 70419114720.

The previous prime is 213213431269. The next prime is 213213431339. The reversal of 213213431334 is 433134312312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213213431339) 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, 163006557 + ... + 163007864.

It is an arithmetic number, because the mean of its divisors is an integer number (26896189815).

Almost surely, 2^213213431334 is an apocalyptic number.

213213431334 is an abundant number, since it is smaller than the sum of its proper divisors (217125605706).

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

213213431334 is a wasteful number, since it uses less digits than its factorization.

213213431334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326014535.

The product of its digits is 15552, while the sum is 30.

Adding to 213213431334 its reverse (433134312312), we get a palindrome (646347743646).

The spelling of 213213431334 in words is "two hundred thirteen billion, two hundred thirteen million, four hundred thirty-one thousand, three hundred thirty-four".