21300020320231 has 2 divisors, whose sum is σ = 21300020320232. Its totient is φ = 21300020320230.

The previous prime is 21300020320219. The next prime is 21300020320237. The reversal of 21300020320231 is 13202302000312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21300020320231 - 2²³ = 21300011931623 is a prime.

It is a super-2 number, since 2×21300020320231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21300020320199 and 21300020320208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21300020320237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650010160115 + 10650010160116.

It is an arithmetic number, because the mean of its divisors is an integer number (10650010160116).

Almost surely, 2^{21300020320231} is an apocalyptic number.

21300020320231 is a deficient number, since it is larger than the sum of its proper divisors (1).

21300020320231 is an equidigital number, since it uses as much as digits as its factorization.

21300020320231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21300020320231 its reverse (13202302000312), we get a palindrome (34502322320543).

The spelling of 21300020320231 in words is "twenty-one trillion, three hundred billion, twenty million, three hundred twenty thousand, two hundred thirty-one".