21403343003 has 8 divisors (see below), whose sum is σ = 25748382720. Its totient is φ = 17380158120.

The previous prime is 21403342999. The next prime is 21403343011. The reversal of 21403343003 is 30034330412.

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 21403343003 - 2² = 21403342999 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 21403343003.

It is not an unprimeable number, because it can be changed into a prime (21403343053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80463563 + ... + 80463828.

It is an arithmetic number, because the mean of its divisors is an integer number (3218547840).

Almost surely, 2^21403343003 is an apocalyptic number.

21403343003 is a deficient number, since it is larger than the sum of its proper divisors (4345039717).

21403343003 is a wasteful number, since it uses less digits than its factorization.

21403343003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160927417.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21403343003 its reverse (30034330412), we get a palindrome (51437673415).

The spelling of 21403343003 in words is "twenty-one billion, four hundred three million, three hundred forty-three thousand, three".