21344731283 has 8 divisors (see below), whose sum is σ = 21424434096. Its totient is φ = 21265120800.

The previous prime is 21344731223. The next prime is 21344731297. The reversal of 21344731283 is 38213744312.

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 21344731283 - 2⁸ = 21344731027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21344731223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458753 + ... + 503133.

It is an arithmetic number, because the mean of its divisors is an integer number (2678054262).

Almost surely, 2^21344731283 is an apocalyptic number.

21344731283 is a deficient number, since it is larger than the sum of its proper divisors (79702813).

21344731283 is a wasteful number, since it uses less digits than its factorization.

21344731283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46165.

The product of its digits is 96768, while the sum is 38.

The spelling of 21344731283 in words is "twenty-one billion, three hundred forty-four million, seven hundred thirty-one thousand, two hundred eighty-three".