21343134323 has 8 divisors (see below), whose sum is σ = 24959413248. Its totient is φ = 17868670344.

The previous prime is 21343134317. The next prime is 21343134343. The reversal of 21343134323 is 32343134312.

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

It is not a de Polignac number, because 21343134323 - 2¹⁶ = 21343068787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21343134343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35453411 + ... + 35454012.

It is an arithmetic number, because the mean of its divisors is an integer number (3119926656).

Almost surely, 2^21343134323 is an apocalyptic number.

21343134323 is a deficient number, since it is larger than the sum of its proper divisors (3616278925).

21343134323 is an equidigital number, since it uses as much as digits as its factorization.

21343134323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70907473.

The product of its digits is 15552, while the sum is 29.

Adding to 21343134323 its reverse (32343134312), we get a palindrome (53686268635).

The spelling of 21343134323 in words is "twenty-one billion, three hundred forty-three million, one hundred thirty-four thousand, three hundred twenty-three".