21303322913423 has 2 divisors, whose sum is σ = 21303322913424. Its totient is φ = 21303322913422.

The previous prime is 21303322913413. The next prime is 21303322913441. The reversal of 21303322913423 is 32431922330312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21303322913423 - 2⁶ = 21303322913359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21303322913413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651661456711 + 10651661456712.

It is an arithmetic number, because the mean of its divisors is an integer number (10651661456712).

Almost surely, 2^{21303322913423} is an apocalyptic number.

21303322913423 is a deficient number, since it is larger than the sum of its proper divisors (1).

21303322913423 is an equidigital number, since it uses as much as digits as its factorization.

21303322913423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 38.

The spelling of 21303322913423 in words is "twenty-one trillion, three hundred three billion, three hundred twenty-two million, nine hundred thirteen thousand, four hundred twenty-three".