21323035135 has 8 divisors (see below), whose sum is σ = 25590548880. Its totient is φ = 17056490304.

The previous prime is 21323035127. The next prime is 21323035147. The reversal of 21323035135 is 53153032312.

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 21323035135 - 2³ = 21323035127 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192897 + ... + 282586.

It is an arithmetic number, because the mean of its divisors is an integer number (3198818610).

Almost surely, 2^21323035135 is an apocalyptic number.

21323035135 is a deficient number, since it is larger than the sum of its proper divisors (4267513745).

21323035135 is an equidigital number, since it uses as much as digits as its factorization.

21323035135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484457.

The product of its (nonzero) digits is 8100, while the sum is 28.

Adding to 21323035135 its reverse (53153032312), we get a palindrome (74476067447).

The spelling of 21323035135 in words is "twenty-one billion, three hundred twenty-three million, thirty-five thousand, one hundred thirty-five".