21313101012323 has 2 divisors, whose sum is σ = 21313101012324. Its totient is φ = 21313101012322.

The previous prime is 21313101012299. The next prime is 21313101012349. The reversal of 21313101012323 is 32321010131312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21313101012323 - 2⁸ = 21313101012067 is a prime.

It is a super-2 number, since 2×21313101012323² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21313101017323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10656550506161 + 10656550506162.

It is an arithmetic number, because the mean of its divisors is an integer number (10656550506162).

Almost surely, 2^{21313101012323} is an apocalyptic number.

21313101012323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21313101012323 is an equidigital number, since it uses as much as digits as its factorization.

21313101012323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21313101012323 its reverse (32321010131312), we get a palindrome (53634111143635).

The spelling of 21313101012323 in words is "twenty-one trillion, three hundred thirteen billion, one hundred one million, twelve thousand, three hundred twenty-three".