21230313105 has 8 divisors (see below), whose sum is σ = 33968500992. Its totient is φ = 11322833648.

The previous prime is 21230313103. The next prime is 21230313107. The reversal of 21230313105 is 50131303212.

It is an interprime number because it is at equal distance from previous prime (21230313103) and next prime (21230313107).

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 21230313105 - 2¹ = 21230313103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21230313103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 707677089 + ... + 707677118.

It is an arithmetic number, because the mean of its divisors is an integer number (4246062624).

Almost surely, 2^21230313105 is an apocalyptic number.

It is an amenable number.

21230313105 is a deficient number, since it is larger than the sum of its proper divisors (12738187887).

21230313105 is a wasteful number, since it uses less digits than its factorization.

21230313105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415354215.

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 21230313105 its reverse (50131303212), we get a palindrome (71361616317).

The spelling of 21230313105 in words is "twenty-one billion, two hundred thirty million, three hundred thirteen thousand, one hundred five".