21323315113 has 8 divisors (see below), whose sum is σ = 21750156288. Its totient is φ = 20900520144.

The previous prime is 21323315089. The next prime is 21323315159. The reversal of 21323315113 is 31151332312.

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 21323315113 - 2⁹ = 21323314601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21323615113) 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, 1000906 + ... + 1021987.

It is an arithmetic number, because the mean of its divisors is an integer number (2718769536).

Almost surely, 2^21323315113 is an apocalyptic number.

It is an amenable number.

21323315113 is a deficient number, since it is larger than the sum of its proper divisors (426841175).

21323315113 is a wasteful number, since it uses less digits than its factorization.

21323315113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023103.

The product of its digits is 1620, while the sum is 25.

Adding to 21323315113 its reverse (31151332312), we get a palindrome (52474647425).

It can be divided in two parts, 2132331 and 5113, that added together give a square (2137444 = 1462²).

The spelling of 21323315113 in words is "twenty-one billion, three hundred twenty-three million, three hundred fifteen thousand, one hundred thirteen".