21343115003 has 4 divisors (see below), whose sum is σ = 24392131440. Its totient is φ = 18294098568.

The previous prime is 21343114997. The next prime is 21343115063. The reversal of 21343115003 is 30051134312.

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

It is a cyclic number.

It is not a de Polignac number, because 21343115003 - 2²⁴ = 21326337787 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21343115003.

It is not an unprimeable number, because it can be changed into a prime (21343115063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1524508208 + ... + 1524508221.

It is an arithmetic number, because the mean of its divisors is an integer number (6098032860).

Almost surely, 2^21343115003 is an apocalyptic number.

21343115003 is a deficient number, since it is larger than the sum of its proper divisors (3049016437).

21343115003 is an equidigital number, since it uses as much as digits as its factorization.

21343115003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049016436.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 21343115003 its reverse (30051134312), we get a palindrome (51394249315).

The spelling of 21343115003 in words is "twenty-one billion, three hundred forty-three million, one hundred fifteen thousand, three".