21310224343 has 2 divisors, whose sum is σ = 21310224344. Its totient is φ = 21310224342.

The previous prime is 21310224317. The next prime is 21310224361. The reversal of 21310224343 is 34342201312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21310224343 - 2²⁹ = 20773353431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21310224443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10655112171 + 10655112172.

It is an arithmetic number, because the mean of its divisors is an integer number (10655112172).

Almost surely, 2^21310224343 is an apocalyptic number.

21310224343 is a deficient number, since it is larger than the sum of its proper divisors (1).

21310224343 is an equidigital number, since it uses as much as digits as its factorization.

21310224343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21310224343 its reverse (34342201312), we get a palindrome (55652425655).

The spelling of 21310224343 in words is "twenty-one billion, three hundred ten million, two hundred twenty-four thousand, three hundred forty-three".