21424024114313 has 4 divisors (see below), whose sum is σ = 21424491760020. Its totient is φ = 21423556468608.

The previous prime is 21424024114309. The next prime is 21424024114333. The reversal of 21424024114313 is 31341142042412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18980939450944 + 2443084663369 = 4356712^2 + 1563037^2 .

It is a cyclic number.

It is not a de Polignac number, because 21424024114313 - 2² = 21424024114309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21424024114313.

It is not an unprimeable number, because it can be changed into a prime (21424024114303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233754128 + ... + 233845761.

It is an arithmetic number, because the mean of its divisors is an integer number (5356122940005).

Almost surely, 2^{21424024114313} is an apocalyptic number.

It is an amenable number.

21424024114313 is a deficient number, since it is larger than the sum of its proper divisors (467645707).

21424024114313 is an equidigital number, since it uses as much as digits as its factorization.

21424024114313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467645706.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 21424024114313 its reverse (31341142042412), we get a palindrome (52765166156725).

The spelling of 21424024114313 in words is "twenty-one trillion, four hundred twenty-four billion, twenty-four million, one hundred fourteen thousand, three hundred thirteen".