21313013203 has 8 divisors (see below), whose sum is σ = 23754442320. Its totient is φ = 19003553280.

The previous prime is 21313013201. The next prime is 21313013207. The reversal of 21313013203 is 30231031312.

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 21313013203 - 2¹ = 21313013201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21313013201) 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, 32991958 + ... + 32992603.

It is an arithmetic number, because the mean of its divisors is an integer number (2969305290).

Almost surely, 2^21313013203 is an apocalyptic number.

21313013203 is a deficient number, since it is larger than the sum of its proper divisors (2441429117).

21313013203 is a wasteful number, since it uses less digits than its factorization.

21313013203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65984597.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21313013203 its reverse (30231031312), we get a palindrome (51544044515).

The spelling of 21313013203 in words is "twenty-one billion, three hundred thirteen million, thirteen thousand, two hundred three".