21310414369 has 2 divisors, whose sum is σ = 21310414370. Its totient is φ = 21310414368.

The previous prime is 21310414361. The next prime is 21310414403. The reversal of 21310414369 is 96341401312.

It is an a-pointer prime, because the next prime (21310414403) can be obtained adding 21310414369 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14814054369 + 6496360000 = 121713^2 + 80600^2 .

It is a cyclic number.

It is not a de Polignac number, because 21310414369 - 2³ = 21310414361 is a prime.

It is a super-3 number, since 3×21310414369³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (21310414361) 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 as a sum of consecutive naturals, namely, 10655207184 + 10655207185.

It is an arithmetic number, because the mean of its divisors is an integer number (10655207185).

Almost surely, 2^21310414369 is an apocalyptic number.

It is an amenable number.

21310414369 is a deficient number, since it is larger than the sum of its proper divisors (1).

21310414369 is an equidigital number, since it uses as much as digits as its factorization.

21310414369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 21310414369 in words is "twenty-one billion, three hundred ten million, four hundred fourteen thousand, three hundred sixty-nine".