21144431134303 has 8 divisors (see below), whose sum is σ = 21761881344000. Its totient is φ = 20535616592088.

The previous prime is 21144431134301. The next prime is 21144431134327. The reversal of 21144431134303 is 30343113444112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21144431134303 - 2¹ = 21144431134301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21144431134301) 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 in 7 ways as a sum of consecutive naturals, for example, 2158911903 + ... + 2158921696.

It is an arithmetic number, because the mean of its divisors is an integer number (2720235168000).

Almost surely, 2^{21144431134303} is an apocalyptic number.

21144431134303 is a deficient number, since it is larger than the sum of its proper divisors (617450209697).

21144431134303 is an equidigital number, since it uses as much as digits as its factorization.

21144431134303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4317833741.

The product of its (nonzero) digits is 41472, while the sum is 34.

Adding to 21144431134303 its reverse (30343113444112), we get a palindrome (51487544578415).

The spelling of 21144431134303 in words is "twenty-one trillion, one hundred forty-four billion, four hundred thirty-one million, one hundred thirty-four thousand, three hundred three".