21303124003 has 8 divisors (see below), whose sum is σ = 24461815040. Its totient is φ = 18173279880.

The previous prime is 21303123991. The next prime is 21303124057. The reversal of 21303124003 is 30042130312.

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

It is not a de Polignac number, because 21303124003 - 2¹³ = 21303115811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21303124103) 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, 7210143 + ... + 7213096.

It is an arithmetic number, because the mean of its divisors is an integer number (3057726880).

Almost surely, 2^21303124003 is an apocalyptic number.

21303124003 is a deficient number, since it is larger than the sum of its proper divisors (3158691037).

21303124003 is a wasteful number, since it uses less digits than its factorization.

21303124003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14423457.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21303124003 its reverse (30042130312), we get a palindrome (51345254315).

The spelling of 21303124003 in words is "twenty-one billion, three hundred three million, one hundred twenty-four thousand, three".